Moving mountains for you
Switch currency

Current Live Auctions

Current Live Fixed Price Sales

Zircon Psm Quartz Eudidymite Psm Illite With Quartz & Microcline

Views:
Watches:
KMF652057

Zircon Psm Quartz Eudidymite Psm Illite With Quartz & Microcline

ex Uli Bahmann
Classic Locality

Description Tabs

Description
Locality: 
Mount Malosa, Zomba, Southern Region, Malawi
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
9.8 × 7.4 × 7 cm
Description

Ex A&U Bahmann collection. A rare paragenesis of minerals is well represented in this 9cm+ floater cluster consisting primarily of quartz and microcline. 

Easily recognizable is the rare replacement of zircon by quartz to be found in countless well exposed groups on the surface of the three dimensional specimen- you will note brown sugary structures that have retained their precise former crystal structure yet being completely replaced and partially coated by small secondary quartz crystals.

In addition you will find numerous hollow cavities which are resultant depressions of aegerine crystals that have eroded away leaving well defined impressions behind. The most impressive cast is positioned in the core of the cluster lined almost completely internally by later mineralization of quartz and microcline crystals that literally fill the void. There is a story to be told by this rarity…

A solitary white aggregate is to be found under close inspection- measuring 1.7cm and consisting of illite after eudidymite, the original crystal structures are again retained. All in all a very unique piece.

Condition is superb.

Mineral Data
What's on the rock

Zircon

Formula: 
ZrSiO4
Strunz: 
9.AD.30
Crystal System: 
Tetragonal
Hardness: 
7.5
Streak: 
White

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

Eudidymite

Formula: 
Na2Be2Si6O15·H2O
Strunz: 
9.DG.60
Hardness: 
6.0
Type Locality: 
Eudidymite locality, Lille Arøya (Midtre Arøy; Øvre Arøy; Övre-Arö), Langesundsfjorden, Larvik, Vestfold, Norway

Illite

Variety Of: 

Muscovite

Formula: 
KAl2(AlSi3O10)(OH)2
Strunz: 
9.EC.15
Hardness: 
2.5
Formula: 
K0.65Al2.0[Al0.65Si3.35O10](OH)2
Hardness: 
1.0 - 2.0
Streak: 
White
Type Locality: 
Maquoketa Shale, Gilead, Calhoun Co., Illinois, USA

Microcline

Formula: 
KAlSi3O8
Strunz: 
9.FA.30
Crystal System: 
Triclinic - Pinacoidal
Hardness: 
6.0 - 6.5
Streak: 
White
Type Locality: 
Arendal, Aust-Agder, Norway

Seller Information

Payment options: offline, paypal_wpp, paypal_wps

Seller's terms and conditions

Thank you for your purchase!

All parcels are sent with Registered airmail.


I can offer a weekly DHL service at an additional cost, please send me a message should you require a quote for this type of shipping, This is usually a once a week service.


**Delivery times can vary depending on the destination, I usually work on 3-4 weeks, Customs can hold your parcel for inspection, this is out of my control, This especially occurs in Germany and the USA.please contact me to assist in tracking your parcel before opening up a request.**

**In some countries the customs office issue the parcel with a local  tracking number when it enters the country, this can be obtained by your local customs office, this includes all East Asian countries, Australia and New Zealand. if this occurs then I am unable to track the parcel unless you can provide me with the new tracking number. **



Combined shipping available:



Pay for the largest items' full shipping cost then I add $10 per additional item.  the usual maximum items I can fit per box is 3, should there be additional items I then price a new box with the same calculation largest items full shipping + additional items at reduced rate. etc

 I calculate the combined shipping automatically at the end of a auction. you will receive a revised invoice should you have won more than one item.

Courier shipping is also available, please inquire about a rate once you have won your items and I will advise on price according to dimension/weight, and if you wish to use this service I will revise your invoice accordingly.