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Gersdorffite-Pca21

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Formula:
NiAsS
Specific Gravity:
6.239
Crystal System:
Orthorhombic
A structural polymorph of gersdorffite-P213 and gersdorffite-Pa3.


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Classification of Gersdorffite-Pca21Hide

Approved

Pronounciation of Gersdorffite-Pca21Hide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of Gersdorffite-Pca21Hide

Density:
6.239 g/cm3 (Measured)    6.193 g/cm3 (Calculated)

Chemical Properties of Gersdorffite-Pca21Hide

Formula:
NiAsS

Crystallography of Gersdorffite-Pca21Hide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Pca21
Cell Parameters:
a = 5.685(3) Å, b = 5.685(3) Å, c = 5.685(3) Å
Ratio:
a:b:c = 1 : 1 : 1
Unit Cell V:
183.73 ų (Calculated from Unit Cell)
Z:
4
Comment:
Pseudocubic. Cell from sample R862 of Bayliss (1982); another sample, less close to the ideal formula, has a = 5.622 Å..

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Gersdorffite-Pca21Hide

Reference List:
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Bayliss, P. (1982): A further crystal structure refinement of gersdorffite. American Mineralogist 67, 1058-1064.

Internet Links for Gersdorffite-Pca21Hide

Mineral and/or Locality  
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