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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Native Silver from
Sur les Roches quarry, Bastogne, Luxembourg, Wallonia, Belgium


Locality type:Quarry
Classification
Species:Native Silver
Formula:Ag
Comments:Dendritic aggregates up to 4-5mm associated with altered galena and acanthite. The aggregates are formed by entangled crystals among which two forms are observed: the cube {100} and the rhombododecahedron {110}. The identification of this mineral has been confirmed by chemical analysis which shows Ag with minor Cu, Zn, I, and Cl. The two last elements are probably related to the presence of halides such as iodargyrite, AgI, or chlorargyrite, AgCl.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Native Silver data
Locality Data:Click here to view Sur les Roches quarry, Bastogne, Luxembourg, Wallonia, Belgium
Data Identifiers
Mindat Occurrence Record ID:85129
Long-form Identifier:1:3:85129:1
GUID (UUID V4):0
Nearest other occurrences of Native Silver
66.7km (41.4 miles) ⓘHermalle-sous-Huy, Engis, Liège, Wallonia, Belgium
69.9km (43.4 miles) ⓘJava, Bas-Oha, Wanze, Liège, Wallonia, Belgium
73.5km (45.7 miles) ⓘSclaigneaux slag locality, Seilles, Andenne, Namur, Wallonia, Belgium
83.8km (52.1 miles) ⓘCopper smelter slag locality, Kall, Euskirchen, Cologne, North Rhine-Westphalia, Germany
85.5km (53.1 miles) ⓘNeu Glück Mine, Willwerscheid, Traben-Trarbach, Bernkastel-Wittlich, Rhineland-Palatinate, Germany
91.0km (56.5 miles) ⓘBinsfeldhammer lead smelter slag locality, Stolberg, Aachen, Cologne, North Rhine-Westphalia, Germany
98.1km (61.0 miles) ⓘAnnenberg, Monzelfeld, Bernkastel-Kues, Bernkastel-Wittlich, Rhineland-Palatinate, Germany
References
Hatert, F., Deliens, M., Houssa, M., Coune, F. (2000) Native gold, native silver and secondary minerals in the quartz veins from Bastogne, Belgium. Bulletin de l'Institut royal des Sciences naturelles de Belgique, Sciences de la Terre, 70, 223-229.
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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