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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Adamite from
Genna zinc smelter slag locality, Helmke quarry nature reserve, Letmathe, Iserlohn, Märkischer Kreis, Arnsberg, North Rhine-Westphalia, Germany


Locality type:Slag Locality
Classification
Species:Adamite
Formula:Zn2(AsO4)(OH)
Formation:Post-mining/Anthropogenic
Comments:Yellow spherical aggregates up to 0.5mm of glassy or waxy indistinct crystals up to 0.2mm associated with blue willemite and gypsum.
Abundance at site:Very Rare
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Adamite data
Locality Data:Click here to view Genna zinc smelter slag locality, Helmke quarry nature reserve, Letmathe, Iserlohn, Märkischer Kreis, Arnsberg, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:76093
Long-form Identifier:1:3:76093:5
GUID (UUID V4):0
Nearest other occurrences of Adamite
40.8km (25.4 miles) ⓘRohdenhaus Quarry (incl. Krieger Quarry), Rohdenhaus, Wülfrath, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany
50.5km (31.4 miles) ⓘWildermann Mine, Ferndorf, Kreuztal, Siegen-Wittgenstein, Arnsberg, North Rhine-Westphalia, Germany
54.8km (34.1 miles) ⓘRamsbeck, Bestwig, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
56.2km (34.9 miles) ⓘLeibnitz-Dante Mine, Hoffnungsthal, Rösrath, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
69.4km (43.1 miles) ⓘPius Mine, Schutzbach, Daaden-Herdorf, Altenkirchen, Rhineland-Palatinate, Germany
75.9km (47.2 miles) ⓘSchöne Aussicht Mine, Burbach, Siegen-Wittgenstein, Arnsberg, North Rhine-Westphalia, Germany
References
Schnorrer-Köhler, G. (1986) Neue Minerale von der Schlackenhalde der ehemaligen Zinkhütte Genna in Letmathe/Sauerland. Aufschluss, 37 (2), 55-67.
Bender, D.; Krimmelbein, W. (1994) Aktuelle Übersicht: Mineralien der Zinkhütte Genna/Sauerland [Current overview: Minerals from the Genna/Sauerland zinc smelter]. Mineralien Welt, 5 (4). 10
 
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