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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Offretite from
Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany


Locality type:Quarry
Classification
Species:Offretite
Formula:KCaMg(Si13Al5)O36 · 15H2O
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Offretite data
Locality Data:Click here to view Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Data Identifiers
Mindat Occurrence Record ID:422656
Long-form Identifier:1:3:422656:7
GUID (UUID V4):0
Nearest other occurrences of Offretite
28.9km (17.9 miles) ⓘMeerberg quarry, Linz am Rhein, Linz am Rhein, Neuwied, Rhineland-Palatinate, Germany
36.4km (22.6 miles) ⓘArensberg, Zilsdorf, Walsdorf, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
47.8km (29.7 miles) ⓘStemmer clay pit, Meudt, Wallmerod, Westerwaldkreis, Rhineland-Palatinate, Germany
53.7km (33.4 miles) ⓘÖlberg quarry, Hundsangen, Wallmerod, Westerwaldkreis, Rhineland-Palatinate, Germany
77.0km (47.9 miles) ⓘAlter Stein Quarry, Allendorf, Greifenstein, Lahn-Dill-Kreis, Giessen Region, Hesse, Germany
References
Blass, G., Emmerich, F., Graf, HW., Schäfer, Ch., Tschörtner, J., (2006): Minerale der Eifelvulkane, Version 1.0, CD, published by authors
 
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