Blogs
19 Feb, 2017This weekend three of my friends visited me for some analytical work on their self collected and collection material. One of them had an old Tsumeb sample hosting filigrane silky masses on germanite renierite matrix. Not...
17 Feb, 2017Greenockite from Tsumeb forms beautiful hexagonal orange crystals in cavities of Cd rich galena. Often the specimens host brownish Cd rich smithsonite. Crystal size is usually around 50-100µm. Studies under the electron...
17 Jan, 2017When I started examining micro minerals I came across a nice specimen hosting olive green bartelkeite. It was pure luck to find this mineral. This is what I can say now looking back at the small number of specimens I had....
29 Nov, 2016Weishanite 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...
21 Nov, 2016Apart 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....
21 Nov, 2016EDS 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 (...
05 Nov, 2016Apart 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...
03 Nov, 2016Recently I obtained a specimen from Tsumeb without a name. It underwent elemental analysis and turned out to be beudantite. This case shows that elemental analysis can be very useful. Even if the precision is limited, in the...
01 Nov, 2016Germanium (Ge) & gallium (Ga) are elements which are essential in our todays life. ----------------------------------------------------------------- In the semiconductor industry Ga is used for InGaAs diodes, which have...
