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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Smithsonite 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:Smithsonite
Formula:ZnCO3
Formation:Post-mining/Anthropogenic
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Smithsonite 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:76109
Long-form Identifier:1:3:76109:5
GUID (UUID V4):0
Nearest other occurrences of Smithsonite
6.4km (4.0 miles) ⓘTiefbau von Hövel Mine, Zinc mines, Iserlohn, Märkischer Kreis, Arnsberg, North Rhine-Westphalia, Germany
9.9km (6.2 miles) ⓘKrug von Nidda Mine, Zinc mines, Iserlohn, Märkischer Kreis, Arnsberg, North Rhine-Westphalia, Germany
12.4km (7.7 miles) ⓘBecke-Oese quarry, Hemer, Märkischer Kreis, Arnsberg, North Rhine-Westphalia, Germany
28.0km (17.4 miles) ⓘChurfürst Ernst Mine, Bönkhausen, Sundern, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
40.8km (25.4 miles) ⓘRohdenhaus Quarry (incl. Krieger Quarry), Rohdenhaus, Wülfrath, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany
42.6km (26.5 miles) ⓘPrangenhaus quarry, Wülfrath, Mettmann, Düsseldorf, North Rhine-Westphalia, Germany
46.4km (28.8 miles) ⓘCastor Mine, Loope, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
47.7km (29.6 miles) ⓘAuguste Victoria coal mine, Hüls, Marl, Recklinghausen, Münster, North Rhine-Westphalia, Germany
47.9km (29.8 miles) ⓘSilberkaule Mine, Heckhaus, Engelskirchen, Oberbergischer Kreis, Cologne, North Rhine-Westphalia, Germany
50.5km (31.4 miles) ⓘWildermann Mine, Ferndorf, Kreuztal, Siegen-Wittgenstein, Arnsberg, North Rhine-Westphalia, Germany
References
Berthold, H. G. (1982) Serpierit von Letmathe [Serpierite from Letmathe]. Lapis, 7 (2) 35
Schnorrer-Köhler, G. (1986) Neue Minerale von der Schlackenhalde der ehemaligen Zinkhütte Genna in Letmathe/Sauerland. Aufschluss, 37 (2), 55-67.(referring to Berthold 1982)
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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