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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Alumohydrocalcite from
Cox Quarry, Lückerath, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany


Locality type:Quarry
Classification
Species:Alumohydrocalcite
Formula:CaAl2(CO3)2(OH)4 · 4H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Alumohydrocalcite data
Locality Data:Click here to view Cox Quarry, Lückerath, Bergisch Gladbach, Rheinisch-Bergischer Kreis, Cologne, North Rhine-Westphalia, Germany
Data Identifiers
Mindat Occurrence Record ID:925448
Long-form Identifier:1:3:925448:0
GUID (UUID V4):0
Nearest other occurrences of Alumohydrocalcite
64.8km (40.2 miles) ⓘKrufter Ofen, Kruft, Pellenz, Mayen-Koblenz, Rhineland-Palatinate, Germany
65.4km (40.6 miles) ⓘIn den Dellen quarries, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
65.5km (40.7 miles) ⓘPumice quarries, Wingertsberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
66.3km (41.2 miles) ⓘThelenberg, Mendig, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
84.6km (52.5 miles) ⓘGraulay quarry, Hillesheim, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
95.3km (59.2 miles) ⓘRamsbeck, Bestwig, Hochsauerlandkreis, Arnsberg, North Rhine-Westphalia, Germany
95.3km (59.2 miles) ⓘKalem, Birresborn, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
References
Kautz, Karl (1968) Ein Vorkommen von Alumohydrocalcit und Allophan bei Bergisch-Gladbach. Neues Jahrbuch für Mineralogie, Monatshefte, 350-358.
 
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