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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Enstatite from
Voronkafotra (Vorokafotra; Vohidava mine), Ianabinda, Betroka District, Anosy, Madagascar


Classification
Species:Enstatite
Formula:Mg2Si2O6
Comments:an enstatite with XMg values from 0.94 to 0.98, Al2O3 varies between 1.80 to 5.57 wt% and MnO is up to 0.14 wt% (Razakamanana et al. (2006)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Enstatite data
Locality Data:Click here to view Voronkafotra (Vorokafotra; Vohidava mine), Ianabinda, Betroka District, Anosy, Madagascar
Data Identifiers
Mindat Occurrence Record ID:650519
Long-form Identifier:1:3:650519:6
GUID (UUID V4):0
References
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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