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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Brownmillerite from
E-2011 xenolith, Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany


Locality type:Occurrence
Classification
Species:Brownmillerite
Formula:Ca2Fe3+AlO5
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Brownmillerite data
Locality Data:Click here to view E-2011 xenolith, Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:980672
Long-form Identifier:1:3:980672:6
GUID (UUID V4):0
Nearest other occurrences of Brownmillerite
0.3km (0.2 miles) ⓘCaspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
0.9km (0.6 miles) ⓘEttringer Feld, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
1.8km (1.1 miles) ⓘMayener Feld, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
2.0km (1.2 miles) ⓘXenolith CS-020, Seekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
2.2km (1.4 miles) ⓘSeekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
2.2km (1.4 miles) ⓘXenolith CS-090 (Hopmannite type locality), Seekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
2.5km (1.5 miles) ⓘXenolith CS-008 (Bellbergite type-locality), Seekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
37.7km (23.4 miles) ⓘEmmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
References
Sharygin, V. V. (2012). Mineralogy of metacarbonate xenolith from alkali basalt, E. Eifel, Germany. In Ore Potential of Alkaline, Kimberlite and Carbonatite Magmatism. Book of Abstracts, XXIX International Conference. Training Program: Alkaline Magmatism of the Earth, Sudak-Moscow, ONTI GEOCHI RAS (pp. 156-158).
 
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