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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Guanajuatite from
Roter Bär Mine, St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany


Locality type:Mine
Classification
Species:Guanajuatite
Formula:Bi2Se3
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Guanajuatite data
Locality Data:Click here to view Roter Bär Mine, St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany
Data Identifiers
Mindat Occurrence Record ID:82158
Long-form Identifier:1:3:82158:2
GUID (UUID V4):0
Nearest other occurrences of Guanajuatite
7.4km (4.6 miles) ⓘFrische Lutter vein (incl. Lutter adit; South Rothäuser adit; North Rothäuser adit), Bad Lauterberg, Göttingen District, Lower Saxony, Germany
54.0km (33.5 miles) ⓘTilkerode mining district, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
Cabral, A. R., Ließmann, W., Jian, W., & Lehmann, B. (2017). Bismuth selenides from St. Andreasberg, Germany: an oxidised five-element style of mineralisation and its relation to post-Variscan vein-type deposits of central Europe. International Journal of Earth Sciences, 106(7), 2359-2369.
 
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