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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Biotite hornfels from
Freux, Libramont-Chevigny, Luxembourg, Wallonia, Belgium


Locality type:Sub-municipality
Classification
Type:Biotite hornfels
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Biotite hornfels data
Locality Data:Click here to view Freux, Libramont-Chevigny, Luxembourg, Wallonia, Belgium
Data Identifiers
Mindat Occurrence Record ID:1359936
Long-form Identifier:1:3:1359936:4
GUID (UUID V4):0
References
de Béthune, S. (1977) Les minéraux de la zone métamorphique de Libramont. Professional Paper, Service Géologique de Belgique, 1977/5, 142, 42 pages.
Hatert, F., Deliens, M., Fransolet, A.-M., Van Der Meersche, E. (2002) Les minéraux de Belgique (2nd ed.) Muséum des Sciences Naturelles, Bruxelles.
 
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