Andreas Gerstenberg's Photo Gallery
7N8-N58Quartz (Var: Chalcedony) SiO2
Dimensions: 105 mm x 80 mm x 40 mm
Pale rose and white chalcedony. The specimen comes from the old Aachen University collection and was just labelled "Conradsdorf bei Freiberg in Sachsen". It shows the typical structure for Halsbach chalcedony (the so-called "Korallenstein"). Probably found in the mid 19th Century.
WVV-QJCCalcite CaCO3 , Baryte BaSO4 , Dolomite CaMg(CO3)2
Dimensions: 95 mm x 60 mm x 50 mm
Clear calcite crystals on dolomite/baryte matrix from Wenzel mine. Ex Berlin Natural History museum, probably from Selb coll. (about 1820).
6HU-38PErythrite Co3(AsO4)2·8H2O , Cobaltkoritnigite Co(AsO3OH)·H2O
Dimensions: 50 mm x 40 mm x 40 mm
Small erythrite crystals with minor purple cobaltkoritnigite from Annaberg. Very old sample, probably from Alte Galiläische Wirtschaft mine.
G5R-EYGScorodite Fe3+AsO4·2H2O , Pharmacosiderite KFe3+4(AsO4)3(OH)4·6-7H2O
Dimensions: 85 mm x 60 mm x 40 mm
Rich specimen with mico scorodite and pharmacosiderite xls.
QTP-RN8Uranocircite Ba(UO2)2(PO4)2·10H2O
Dimensions: 30 mm x 20 mm x 20 mm
AHU-1UEQuartz SiO2
Dimensions: 85 mm x 85 mm x 80 mm
Freestanding smoky crystals, rather rare for the locality.
L5R-DJ6Quartz (Var: Eisenkiesel) SiO2 , Hematite Fe2O3
Dimensions: 65 mm x 54 mm x 39 mm
TEF-YKRBaryte BaSO4
Dimensions: 91 mm x 79 mm x 38 mm
CPC-N0WBaryte BaSO4 , Fluorite CaF2
Dimensions: 60 mm x 50 mm x 40 mm
C9L-8YNLithiophorite (Al,Li)MnO2(OH)2
Field of View: 150 mm
