Antimonian Gersdorffite : Ni(As,Sb)S, Siderite : FeCO3, Annabergite : Ni3(AsO4)2·8H2O

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Summary of all keyboard shortcuts

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Copyright © AC
minID: Q75-PV0

Antimonian Gersdorffite : Ni(As,Sb)S, Siderite : FeCO3, Annabergite : Ni3(AsO4)2·8H2O

Copyright © AC  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 55 mm x 40 mm x 40 mm

This is a classic species of korynite from the type locality.
Victor, Ritter von Zepharovic named 1865 a new discovered ore as korynite (greek xopvw for lobar) from the Greinig adit.
See here page 242 the original description https://opac.geologie.ac.at/wwwopacx/wwwopac.ashx?command=getcontent&server=images&value=VH1864_241_C.pdf

The name korynite is discredited as its a mixture of Ni-arsensulfide (Gersdorffite) and Ni-stibiumsulfide (Ullmannite) about 80:20. The correct name is Sb-bearing gersdorffite.

At the end of 1st Worldwar (when the mine was still an active iron mine) korynite was so abundant that the mining officials planned to use it as nickel ore. The war was over before production!

This specific specimen came out of an old Bohemian collection, was collected before WW1 and is now in my collection.
Its almost impossible to get this mineral nowadays!

This photo has been shown 69 times
Photo added:3rd Apr 2018
Dimensions:1280x960px (1.23 megapixels)
Date/Time of Photo:2nd Apr 2018 12:11:24
Software:Adobe Photoshop Elements 11.0 Windows
Exposure time:1/160s
Focal Length:6mm
Focal Length (35mm film equivalent):30mm
ISO speed:100

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