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  • Blog entry
    Marc Allen Fleischer owner of the Fleischer Museum has been showing of this interesting specimen from Tsumeb. One of the main directions of the Fleischer collection is "Rough and Cut" where a mineral is displayed side by side as natural mineral with a...
  • Blog entry
    EDS confirmed galloplumbogummite spheres (pictures 1-5; picture no. can be seen by mouse overlay on the pictures below) in germanite renierite ore, accompanied by otjisumeite needles (pictures 8-10), unknown bright phase (lead phospate without Cl,...
  • Blog entry
    El Teniente mine is reportedly the largest underground copper mine in the world with some 3000km of tunnels and 1500km. The mine started in the the 1820s and named from Braden mine from 1904 until it was changed to El Teniente mine in 1973. The link...
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    Some years ago, around 2010 news started to trickle out about spectacular finds of collectable mineral specimens in Inner Mongolia. The first deposits brought back memories of Dal'negorsk as the geology and minerals like Ilvaite showed similarities....
  • Blog entry
    Recently listed online by Roberto Rojas of Minerat minerals is a remarkable specimen of kröhnkite & blödite from Coronel Manuel Rodriguez Mine, Mejillones, Antofagasta, Chile. At 25cm across the bright blue kröhnkite would be impressive in its own...
  • Blog entry
    Bernissart Show is an annual event in Hainaut region of Belgium. The 28th show was held this weekend (29-30 August) Here are some photos of the show and a link to the original write up posted by Belgian collector Max Tom on his excellent blog site (in...
  • Blog entry
    Jason Smith, one of our many regular sellers of interesting and obscure minerals or localities, was in discussion with me the other day. He happened to mention that he had acquired a liroconite specimen from Sterling Mine, in Sussex County, New Jersey....
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    In terms of desirability, the specimens collected by NASA in ‘69 would be hard to beat. Their superb provenance is excellently documented. They are holotypes of three minerals new to science, and brave men risked their lives to collect them. There were...
  • Blog entry
    During September we undertook the appraisal and purchase of Peter Uuerpmann's collection located in Guadamar Del Segura near Alicante, Spain. As the collection was in secure storage there were some challenges in getting access and seeing the minerals,...
  • Blog entry
      It is Munich time again and I am sure you will have noticed a number of "Munich" themed auctions here on e-Rocks. As usual there is a great choice of minerals coming up and more to come over the next week or so, there is also a full programme of...
  • Blog entry
    Weishanite is a very rare gold-silver amalgam, which had two localities. Recent investigations of a unknown metallic hexagonal phase on an old sample hosting verified magnolite showed that this is Weishanite in beautiful hexagonal crystals. I have not...
  • Blog entry
      Coldberry Gutter is a prominent scar in the hills high above the Weardale and Teesdale valleys at the head of Bow Lee and Hudeshope valleys, within County Durham, UK. Location of Coldberry Gutter   All across this area there are a number...
  • Blog entry
    Last month we blogged about the acquisition of an important Wheal Maudlin "Horsetooth" siderite specimen from an unspecified lot of minerals at an auction in North Yorkshire. Siderite - Wheal Maudlin, Lanlivery, Cornwall The provenance of the piece has...
  • Blog entry
    The new e-Rocks has an archive of approximately 180,000 specimens accrued over 9 years of listing. We have now made these available to registered users of our site with further mineral and location details tied in. Here is a rather good specimen of...
  • Blog entry
    A large block of native iron and weighing approx 20 tonnes. It was brought to the Naturhistoriska riksmuseet in Stockholm Sweden in 1870 by boat and horse-drawn carriage from Greenland's West Coast by Adolf Erik Nordenskiöld to a large fanfare. Naturally...
  • Blog entry
    I spotted this wonderful photo of cuprorivaite posted by Joy Desor in a recent auction. Of course cuprorivaite has nothing to do with wulfenite apart from its tetragonal crystals with flattened tabular habit as shown. Chemically it has a formula CaCu[...
  • Blog entry
    George turned up today with a little collection of mainly Scottish Minerals. This is some native silver from Alva Mine, Central Scotland. 8mm across - rare stuff! The discovery of a native silver deposit in 1715 also coincided with the Jacobite rebellion...
  • Blog entry
    I have had this little box of granular and crystalline gold on my desk since 2007. It originates from Pilgrims Rest, Witwatersrand in South Africa. It belonged to the Warren Taylor collection part of which will be making a splash later on in the year....
  • Blog entry
    Merry Christmas to all! The mineral baubles decorating the above tree are all from the same unusual American mine. The Christmas of 1902 was a corker for George B. Chittenden of Gila County, below (that's a contented smirk he's got) - But not so, the...
  • Blog entry
    Apart from selling on e-rocks I am a passionate field collector. Everybody else doing so knows how difficult it can be to collect at a new locality. When the new e-rocks was introduced I was really happy to use the database function. You can search for...
  • Blog entry
    Apart from EDS analysis at a charge of 15€/sample, we now offer our e-rocks customers, who buy more than ten specimens per month, five analysis for free per year. For more information have a look at: http://www.mineralanalytik.de/en/energydispersive-...
  • Blog entry
    A few weeks ago we were in the Warehouse/shed and found this specimen in a box at the back. Purchased on a daytrip to Antwerp Show from TV Towers back in 2002. Those were the days when I had more energy!
  • Blog entry
    e-Rocks seller and Austrian collector Andreas Wallisch has been showing off a new addition to his collection. A fine specimen of a variety of Lumachelle, called Bleiberg Shell Marble (Muschelmarmor)from Bleiberg in Carinthia in Austria. This particular...
  • Blog entry
    It is approaching the second anniversary of George joining the e-Rocks team; so after a record 24 consecutive "Employee of the Month" awards we thought it time to reward him with a nice trip to Spain. The upshot to this will be that we are going to be...
  • Blog entry
    A bit of a surprise showed up today when going through some Madagascan specimens for auction. Packed away in thumbnail box labelled "Tourmaline Rubellite - Ambalamatsara" was this super little specimen of scheelite from Baia Sprie - Romania. These much...
  • Blog entry
    Hi All, We have fixed the problem with accessing e-Rocks yesterday. The rescheduled end times for yesterday's auctions are now updated. Note, these auctions will close across today and tomorrow along with the programme listings with altered times. Please...
  • Blog entry
    It has already been quite a month, but today we passed another milestone with this specimen of bakhchisaraitsevite. No it isn't the most unpronounceable mineral on the site, or the longest mineral name not to use a U or O, though it might be either! This...
  • Blog entry
    Hi all, as the new site is online now and a lot to explore, i just want to give thumbs up for the e-rocks crew. Quite a task to manage all and fix the (inevitable) bugs which are quite usual if a system is relaunched or set up new. I am looking forward...
  • Blog entry
    Reading something on Facebook by Ru Smith reminded me of this story about the demise of one of Cleveland's (now Yorkshire) more prominent land marks. The hill was originally a "Sugar Loaf", outlying the North Yorkshire Moors. The geology is sandstone...
  • Blog entry
    This leiteite specimen from the Uerpmann collection recently posted on Facebook brought back fond memories of the man who's name was given to the mineral back in 1977. Leiteite was named to honour Luis Antonio Bravo Teixeira-Leite (1942–1999), Portuguese...
  • Blog entry
      Some interesting additions made to the e-Rocks catalogue from new seller Marco Frigerio of Classic Rocks and Gems, for both Iridium Chalk and Iridium Clay: these are examples of an iridium rich sediment found localised in unique layers in...
  • Blog entry
    Earlier this month I was introduced to a small selection of specimens of talc on dolomite from Portreath Beach on the Lizard, Cornwall. These came to prominence in the Mineralogical Record Show Report for Ste Marie 2017, written up as quote. "In one...
  • Blog entry
    This week we have some big things to do on the e-Rocks service. We last went through this in September 2015 when we had much less traffic and data to store. If things are going well 5 years is quite a long life-span for a system, and apart from routine...
  • Blog entry
    Congratulations to long standing customer of e-Rocks, Andy Christy for the naming of new mineral "andychristyite" after his good self. Andy joins an ever growing list of sellers, customers and visitors to our site to which this honour has been bestowed....
  • Blog entry
    1730: The first prospectors in the the Franklin Mining District, Dutch miners from the Hudson Valley, unfortunately called the area "the copper tract." Although copper minerals do occur in the orebody - 38 of them, including a rare copper hydroxyl...
  • Blog entry
    Our visit to Bakewell Show for another year is sadly over; but what an eventful couple of days it has been. We arrived on the Friday night and after getting e-Rocks organised we headed off for the first meal out of the weekend. The Friday night "Curry...
  • Blog entry
    Stanhope Silver Band - Weardale Show 2017   It is time to publicise the upcoming 2018 Weardale show. Organised by Enrico Rinaldi and held in St John Chapel in the heart of beautiful Weardale, this is the second annual show. Last year's show...
  • Blog entry
    In late 2014 we started adding daily updates for closing e-Rocks auctions to Facebook. Basically this is a selection of photos from items in closing auctions to let our Facebook fans see what is happening on the site each day. As a consequence we have...
  • Blog entry
    Hi everybody! Next December 16, 17 and 18 there will be celebrate MinerELX MineralShow in Elche (Alicante) Spain. We have opened a Mineral Photo Contest and we would like to invite you to participate. Mineral Contest with 3 categoies: - Alicante mineral...
  • Blog entry
    You may have noticed today's home page centre has changed; usually we display "today's auctions closing", but today we are showing "all auctions". There is a simple reason for this. Because of demand from our sellers, we have had to increase our schedule...
  • Blog entry
    Today (23rd October) we notched up item #680000 into our specimen database, completing another 10,000 increment to the catalogue. The honoured rock is a specimen of Cleusonite from Fibbia, Ticino in Switzerland. The specimen was listed by Soenke Stolze...
  • Blog entry
    As many will already know we maintain a daily blog of new listings, auctions closing and photography over on the e-Rocks Facebook page. Over the last 18 months we have built quite a following and it is thanks to our Sellers, and Visitors that we've...
  • Blog entry
    A lot earlier this morning George and his partner Sam became parents for the first time. Their little boy has been named Alexander Thomas Wrigley. There are two knock on effects, I have become a grandparent, and George is now currently covering his new...
  • Blog entry
    If you’ve tried to hunt for minerals using a metal detector, you are familiar with the challenges. Especially if you are looking for, say, silver at an abandoned mine where all of the structures have been leveled to the ground. Trash is everywhere. Old...
  • Blog entry
    Facebook friend and collector Michael Pfeil posted a gallery of fine micro photos of specimens collected in the Bergischen Land area of North Rhine - Westphalia. Here is a translation of his album introduction and a few of his 165 photos. "In this album...
  • Blog entry
    Last weekend I was reading on the BBC website about the discovery of a "lost" portrait painting by Rubens of George Villiers, the 1st Duke of Buckingham (d.1628). It turned out the painting was lost in plain view hanging and on public display in Glasgow'...
  • Blog entry
    It was down to Carsten to wrap up August 2015, and boy did he find something a bit unusual! Brunogeierite is an insanely rare iron germanate found only (so far) in a few places, plus Tsumeb. The crystal habit is black octahedral crystals. For a Tsumeb...
  • Blog entry
    Introduction:  A few months ago I came across the mineral aldridegeite in the IMA list of minerals whilst doing some research. This sulphate mineral is a member of the develline group first discovered and only found at Broken Hill, New South Wales,...
  • Blog entry
    Yesterday our friend Aamir Shah came calling as he has been doing since 2007. We first met Aamir in the car park at Bakewell Show in October 2006 and ever since he has been a regular visitor to TV Towers 3 or 4 times a year. Aamir spends 2-3 months in...
  • Blog entry
    What a great picture of Texan collector Jim Spann up close with an amazingly good specimen of plumbogummite after pyromorphite from China. I believe there is a general consensus that this is one of the largest/best specimens there is from this recent...
  • Blog entry
    We got our new xray diffractometer this week. It will come with a two dimensional detector which enables out of plane bragg peak measurement. This allows ultra fast measurements or extremely low concentrations of mineral samples. In 2018 we will offer a...
  • Blog entry
    Here is another odd mineral featured in Armin Scholer's current auction. Kaiyuhite was first proposed as a new mineral back in the 1980s by young mining geologist Tony Dunn, who had noticed and collected this silver-grey metallic material whilst...
  • Blog entry
    Once again whilst researching and updating a new mineral I came across another interesting figure behind the mineral name. This time the mineral was gorbunovite - the citation from the IMA proposal is in the box below.  Gorbunovite The mineral is...
  • Blog entry
    Yesterday at around mid day George and his partner Sam became parents for the second time. Their little girl has been named Hazel [ ] Wrigley, and Alex has a younger sister. Apart from becoming a grandparent for the second time I am out of retirement and...
  • Blog entry
    Sometimes even the most clearly labelled specimen will have you scratching your head in trying to find out what it is or where it is really from! Working with old collections and labels it is possible to encounter changes in mineral names via...
  • Blog entry
    The project to open a pit to extract tungsten at Hemerdon has been going for a few years, but now it has entered into production with the first concentrate being produced. As reported by the Plymouth Herald "it represents another major milestone in the...
  • Blog entry
    In under 2 weeks it will be time for this year's Munich Show. Mineralientage München will be open from 27th - 29th October and George and I will be there from 25th October. As usual we will be based with Christian Rewitzer in Hall A6.271. Mineralientage...
  • Blog entry
    The mines at Merelani in Tanzania are not only already famous for the gemstones tanzanite, tsavorite, scapolite etc. but also for the superbly well crystallised sulphide minerals namely pyrite, wurtzite and of course alabandite, all coming to prominence...
  • Blog entry
    Recently reported the Michigan Tech website - Two leading Michigan universities have joined up to preserve a historic mineral collection. The University of Michigan Collection, including the collection of Douglass Houghton will be located and displayed...
  • Blog entry
    The La Fossa crater on the Aeolean Island of Vulcano has spectacular fumaroles. This one is venting gas at around 400°C, surrounded by an aureole of sublimates; white salammoniac and 4 allotropes (or polymorphs) of sulphur - α-sulphur, or orthorhombic...
  • Blog entry
    Belgian collector Jean Dehaye has recently been showing pictures of his recently collected specimen from Beez, Naumur, Belgium. A little over 2cm across comprising a hollow fossil cast with calcified internal ribs covered with micro honey coloured...
  • Blog entry
    Here are a group of Pentire Glaze pyromorphite crystals just sold by Mike Merry of Cornwall & Devon Minerals. Recently collected and by no means tiny these crystals are typically 1cm tall. Mike has done a super job with the photography and the...
  • Blog entry
    I was working on a new mineral the other day and spotted an interesting question raised shared by various sources. Tredouxite (IMA approved pending publication) is named for professor Marian Tredoux in the Department of Geology, University of the Free...
  • Blog entry
    I spent most of my Monday in the office with camera. Found some interesting mineralogy on some specimens from Bou Azzer. Varied paragenesis with different chemistry. Great colours whatever!
  • Blog entry
    A little "smoke gets in your eyes" moment today as we said goodbye to Chris Mavris who has been helping us for the last 9 months. Behind the scenes at e-Rocks Chris has been diligently working away at some "special" projects for us which we will be...
  • Blog entry
    Love this photo posted by Megan Scott showing behind the scenes with e-Rocks seller Jason Smith, AKA Bucket of Holes Minerals. Jason has been active on e-Rocks now since December 2012 and has been providing a super range of rare and interesting minerals...
  • Blog entry
    Was happy to see a nice post from Marc Allen Fleischer of the Fleischer Museum on Facebook the other day. Mark had recently purchased and received the above Megiliggar apatite from TVM. This is his post, "You don’t expect to find a Pegmatite in England...
  • Blog entry
    Here is some information about an article published on the BBC website yesterday concerning a paper shortly to appear in the American Mineralogist. Authored by Dr Robert Hazen, from the Carnegie Institution in Washington DC, and Prof Jesse Ausubel of The...
  • Blog entry
    Of course earthquakes are not funny, but this report on Facebook did make me laugh....thanks to my Facebook friend Matt Houston for the report. Matt Houston - "Just had an earth quake here. 9.43" Other - "That's a very strong earthquake - Do you think we...
  • Blog entry
      Poudretteite, pronounced “poo-dret-tay-ite” is a rare borosilicate mineral first discovered in the 1960s but not formally recognised as a mineral until 1986 (IMA1986-028). Named after the Poudrette family, original owners of the Poudrette Quarry...
  • Blog entry
    Always good to see people help each other out, as promoted by e-Rocks seller Carsten Slotta (MinTreasure) today. Joy Desor is an excellent photographer and also a seller here, took these great shots for Carsten of his specimens.
  • Blog entry
    Crystals to cosmetics, this post is about various minerals which have been used, without chemical alteration, as makeup. OCHRE Evidence of the use of minerals to adorn human skin has been gathered back to around 7000 years ago, although there is little...
  • Blog entry
    Today we have begun the deployment of many new changes to e-Rocks. We are working behind the scenes to introduce many new features for both desktop and mobile users of our site, and today’s upgrade represents the first stage along the way, primarily for...
  • Blog entry
    Working with old collections will often throw up unexpected snippets of information, "factoids", or link to some other part of a mineralogical jigsaw. Recently spotted stowed away in Norman Cogger's collection was a specimen of "Gold", Banket Ore; a...
  • Blog entry
    13th & 14th August 2016 is a date for all UK based collectors to add to your diaries.... ........there is a new show being added to the UK mineral show circuit. Derbyshire based Don Edwards in conjunction with Tennants Auctioneers are launching the...
  • Blog entry
    Liroconite is just one of those minerals that attracts attention; it is rare, colourful and good specimens usually only found in old collections. When a piece is listed on e-Rocks we usually get excited and this one is definitely no exception. We saw...
  • Blog entry
    We are having quite a golden time for new mineral species additions to e-Rocks. This short blog features news from from Jason Smith and Volker Betz regarding two new phosphate minerals from Foote Mine in North Carolina, USA. Apologies for the pun in the...
  • Blog entry
    Here is a tremendous specimen recently posted by Facebook friend and fellow collector Yasuichi Okazaki in Japan. The specimen 37mm X 26mm X 46mm is primarily sphalerite crystals but intergrown with bright gold wires. In his post Yasuichi goes on to...
  • Blog entry
    Until I researched it I would never have thought vanadinite likely to occur at Ilfeld in Harz, Germany. The specimen we discovered is a manganite matrix with tiny pockets of braunite, and with one solitary yellow (part) crystal within. Being solitary and...
  • Blog entry
      George and I were on the road early today to visit the 2017 Sussex Mineral & Lapidary Society Show (SMLS) at Haywards Heath. This was the first time we have been to the show since 2010; e-Rocker Trevor Devon also Treasurer of the SMLS...
  • Blog entry
    The calendar has quickly stepped around again and this year's Autumn show schedule is beginning soon; in two weeks it will be Bakewell time once more. George and I will be there again this year and no doubt will see many of our UK based collector friends...
  • Blog entry
    Whilst doing some tidying on the website I came across the mineral postite recently listed. I needed to check out the composition the relation to other minerals. It was not long before I was looking into the range of minerals containing the decavanadate...
  • Blog entry
    Here we are back in Bakewell for the 15th consecutive year. By comparison with others a short innings but one of the constants throughout the life and times of TVM.  George and I celebrated with a Chinese meal in the restaurant that used to be an Indian...
  • Blog entry
    Andyrobertsite and calcioandyrobertsite are two fascinating mineral species present in a single very famous specimen from Tsumeb.  This superb specimen was featured in the cover of the Mineralogical Record vol.30, num. 3, May-June 1999, jointly with the...
  • Blog entry
    On 1st October 2017 there will be some changes to the e-Rocks.com business plus the Terms & Conditions. The e-Rocks.com business will be transferring from our current Thames Valley Minerals ownership to a new company registered in the UK, e-Rocks Ltd...
  • Blog entry
    The Birmingham Auction house Fellows recently conducted an auction of some 257 lots of worked Blue John. The group photo must almost be without precedent! The catalogue contained just about every type of object that has ever been fashioned from Blue John...
  • Blog entry
    We just acquired a little stash of Peruvian silver minerals and received a nice surprise when we discovered one of the boxes was double layered with these little pill boxes underneath. Unfortunately there are no labels on the boxes so there is no way of...
  • Blog entry
    I spotted our third ever specimen of santanaite go under the virtual gavel the other day and in my tiny brain the name resolved to "santanaite, named for Carlos Santana legendary Mexican guitarist"! Of course santanaite is named for its type and only...
  • Blog entry
    The new year continues this week with a full program of auctions from the e-Rocks sellers. As usual a huge and diverse range covering most aspects of collecting. This diamond listed in the latest SAL minerals auction is a good example, weighing in at 57....
  • Blog entry
    This old label and specimen came to light the other day when we were moving some boxes around in the TVM store room. Mineralhaus Droop was based in Dresden and this label has an uncertain age but likely to date from later in the period of 1905 -1930s....
  • Blog entry
    This last weekend George has been away at a friend's wedding in York. In addition to the planned festivities we also scheduled him a visit to look at some minerals whilst he was in the area! Arrived back here at TV Towers today is George with 22 flats...
  • Blog entry
    This week we are planning to make some upgrades to e-Rocks. Everything will be going on behind the scenes. There maybe a few occasions you will find a page to slow to load or will need a "refresh" for this to complete as the new software synchronises...
  • Blog entry
    Just approved and pending publication here is news of yet another vanadate mineral, and this time by coincidence it has a "van" in the name. Vandermeerscheite is a new mineral chemically similar to carnotite.   Vandermeerscheite K2[(UO2)2V2O8]·2H2O...
  • Blog entry
      After a short break we welcome back e-Rocks dealer – Jaroslaw Skupiewski, from Poland. Under the banner Geo-Trader Minerals Jaroslaw has been establishing himself as an European show dealer for the last 12 years, but he has also been busy online...
  • Blog entry
    Giuseppe Siccardi of Yourmineral Collection in Italy emailed me at the end of last month to tell me of some changes with his business. Giuseppe has been trading under Yourmineral collection (item code YMC) with e-Rocks since the end of 2007. Now 10 years...
  • Blog entry
    Along with everything else that is going on we have been doing some background work on some phosphate minerals spurred on by a request by seller Modris Baum (LMB Minerals) and something he had discovered on a Brazilian hureaulite specimen. Modris has...
  • Blog entry
    Traditionally July and August are slower months for us; with both sellers and collectors away on holiday etc. This year we have been moving like an express train with the e-Rocks sellers adding 10000 new items in the 65 days from June 26th through to...
  • Blog entry
    When starting offering analytical service I got in contact with some passionate mineral collectors. This allowed me too examine some minerals, I did not hold in my hands before. As you can see in my current auction, I can offer paxite, mgriite and...
  • Blog entry
    Hi all! There is a new photo contest on the way, the second Mineral Photo Contest MinerElx is open for entries until 30th of November. This year there are two categories: macro photos and micromount photos. No age limit and every participant can submit...
  • Blog entry
    The day before we went to Munich the nice man from UPS turned up on my doorstep with quite a large box. As it happened, the Sunday before I was out dog walking and pocket pinging on messenger learning all about a little discovery up in Weardale. A new...