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November 2016

  • 12 Nov, 2016
    Mark Wrigley (Admin)
    As they say "you live and learn" and in the interest of mineralogy this is nearly a daily experience. The photograph above shows some little grain-like crystals of native sulphur set on scorodite from Hemerdon Bal in Devon,...
  • 09 Nov, 2016
    Mark Wrigley (Admin)
    For those of you who check out my personal timeline on Facebook you will already be aware that I keep this fed with a steady stream of mineral photographs and sometimes (not so) witty captions! I just do this for a bit of...
  • 06 Nov, 2016
    Mark Wrigley (Admin)
    Peshawar based Imran Bangash of Spin Ghar Minerals has just returned from an exciting trip to the mining locality at Marki Khel in Khogyani, Afghanistan. The locality is well reknowned for its wonderful specimens of...
  • 05 Nov, 2016
    Joy Desor
    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...
  • 03 Nov, 2016
    Joy Desor
    Recently 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...
  • 02 Nov, 2016
    Mark Wrigley (Admin)
    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...
  • 01 Nov, 2016
    Joy Desor
    Germanium (Ge) & gallium (Ga) are elements which are essential in our todays life. ----------------------------------------------------------------- In the semiconductor industry Ga is used for InGaAs diodes, which have...