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mineralists: Amethyst crystals on matrixGoboboseb Mts, Namibia Geology Nerd
GartrelliteFormula: Pb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)System: TriclinicColour: Greenish yellowLustre: EarthyHardness: 4½ Strengite Formula: FePO4 · 2H2O System: Orthorhombic Colour: Purple, violet, pink, … Hardness: 3½ – 4 From: Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia Credit: Christian Rewitzer FMF Geology IN
rockon-ro: SODALITE (Na-Al Silicate Chloride) from Namibia, Africa. Deep blue massive sodalite with white bands of calcite. Geology Nerd
hematitehearts: Dioptase? Locality: Kaokoveld, Namibia Geology Nerd
mineralists: Amethyst crystals on matrixGoboboseb Mts, Namibia Geology Nerd
Hi Matt, I understand that apatite is not a rare mineral from the Erongo region. However, I have never encountered it on my buying trips. It is indeed a strange banding. Unfortunately my knowledge is far to poor to answer … Continue reading
Hi Pierre, Thanks for your interesting trip report. The black unidentified crystal inclusions in the quartz crystal you asked about appear to be hematite crystals. Inclusions in quartz are one of my favorites. Thanks, Cliff FMF – Friends of Minerals … Continue reading
structureminerals: Dioptase from Tsumeb Mine, Namibia coming to the shop tomorrow along with many other new listings StructureMinerals.com mineralia
Thanks Pierre for your report on your field trip to Namibia, it looks an interesting Country. The photo’s are great and I really like your last three large quartz specimens and the andradite garnet also. Best regards, Mike 🙂 FMF … Continue reading