Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Spinel from
Voronkafotra (Vorokafotra; Vohidava mine), Ianabinda, Betroka District, Anosy, Madagascar


00363310017366986733696.jpg
Spinel

Voronkafotra, Ianabinda, Betroka District, Anosy, Madagascar
00363310017366986733696.jpg
Spinel

Voronkafotra, Ianabinda, Betroka District, Anosy, Madagascar
08900000017272245021322.jpg
Spinel

Voronkafotra, Ianabinda, Betroka District, Anosy, Madagascar
Classification
Species:Spinel
Formula:MgAl2O4
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Corundum1
Sapphirine1
Data
Mineral Data:Click here to view Spinel data
Locality Data:Click here to view Voronkafotra (Vorokafotra; Vohidava mine), Ianabinda, Betroka District, Anosy, Madagascar
Data Identifiers
Mindat Occurrence Record ID:364397
Long-form Identifier:1:3:364397:6
GUID (UUID V4):0
References
Behier, Jean (1963) Carte minéralogique de Madagascar. Archive Service Géologique de Madagascar A.1871
Razakamanana, T., Ackermand, D. and Windley, B. F. (2006 ): Metamorphic evolution of sapphirine-bearing rocks from Vohidava area, Southern Madagascar: Structural and tectonic implication. Proceedings of the German-Malagasy Research Cooperation in Life and Earth Sciences edited by C Schwitzer, S Brandt et al. p 41-60
 
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