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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Limonite from
Sandkopf quarry, Johannisberg, Geisenheim, Rheingau-Taunus-Kreis, Darmstadt, Hesse, Germany


Locality type:Quarry
Classification
Species:'Limonite' (not an IMA approved species)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Limonite data
Locality Data:Click here to view Sandkopf quarry, Johannisberg, Geisenheim, Rheingau-Taunus-Kreis, Darmstadt, Hesse, Germany
Data Identifiers
Mindat Occurrence Record ID:1968520
Long-form Identifier:1:3:1968520:1
GUID (UUID V4):0
Nearest other occurrences of Limonite
0.6km (0.4 miles) ⓘJohannisberg mine, Johannisberg, Geisenheim, Rheingau-Taunus-Kreis, Darmstadt, Hesse, Germany
8.0km (5.0 miles) ⓘWisper valley, Lorch am Rhein, Rheingau-Taunus-Kreis, Darmstadt, Hesse, Germany
11.0km (6.8 miles) ⓘDr. Geier mine (Amalienhöhe mine; Elisenhöhe mine), Waldalgesheim, Rhein-Nahe, Mainz-Bingen, Rhineland-Palatinate, Germany
14.4km (8.9 miles) ⓘJulius mine, Schlangenbad, Rheingau-Taunus-Kreis, Darmstadt, Hesse, Germany
21.0km (13.0 miles) ⓘForstbach valley, Sankt Goarshausen, Loreley, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
21.7km (13.5 miles) ⓘBeck quarry, Miehlen, Nastätten, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
22.6km (14.1 miles) ⓘPlatte castle, Platte, Taunusstein, Rheingau-Taunus-Kreis, Darmstadt, Hesse, Germany
23.7km (14.7 miles) ⓘWerlau, Sankt Goar, Hunsrück-Mittelrhein, Rhein-Hunsrück-Kreis, Rhineland-Palatinate, Germany
24.9km (15.5 miles) ⓘÄquivalenz adit, Wellmich, Sankt Goarshausen, Loreley, Rhein-Lahn-Kreis, Rhineland-Palatinate, Germany
28.9km (18.0 miles) ⓘSchmittenzug mine, Niederhausen, Rüdesheim, Bad Kreuznach, Rhineland-Palatinate, Germany
References
www.mineralienatlas.de (2026) Steinbruch am Sandkopf. https://www.mineralienatlas.de/?l=22655
 
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