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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Naumannite from
Brummerjan Mine, Zorge, Walkenried, Göttingen District, Lower Saxony, Germany


Locality type:Mine
Classification
Species:Naumannite
Formula:Ag2Se
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Naumannite data
Locality Data:Click here to view Brummerjan Mine, Zorge, Walkenried, Göttingen District, Lower Saxony, Germany
Data Identifiers
Mindat Occurrence Record ID:600396
Long-form Identifier:1:3:600396:8
GUID (UUID V4):0
Nearest other occurrences of Naumannite
9.9km (6.1 miles) ⓘRoter Bär Mine, St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany
12.3km (7.6 miles) ⓘFrische Lutter vein (incl. Lutter adit; South Rothäuser adit; North Rothäuser adit), Bad Lauterberg, Göttingen District, Lower Saxony, Germany
23.0km (14.3 miles) ⓘCharlotte Mine, Harz (Landkreis Goslar), Goslar District, Lower Saxony, Germany
26.7km (16.6 miles) ⓘSt Lorenz Mine, Clausthal-Zellerfeld, Goslar District, Lower Saxony, Germany
47.1km (29.3 miles) ⓘTilkerode mining district, Mansfeld, Mansfeld-Südharz, Saxony-Anhalt, Germany
References
Simon, Grigore, Kesler, Stephen E., Essene, Eric J. (1997) Phase relations among selenides, tellurides, and oxides; II, Applications to selenide-bearing ore deposits. Economic Geology, 92 (4) 468-484 doi:10.2113/gsecongeo.92.4.468
 
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