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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Dufrénite from
Hühnerkobel Mine (Hennenkobel Mine), Rabenstein, Zwiesel, Regen District, Lower Bavaria, Bavaria, Germany


Locality type:Mine
Classification
Species:Dufrénite
Formula:Ca0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Fairfieldite
Data
Mineral Data:Click here to view Dufrénite data
Locality Data:Click here to view Hühnerkobel Mine (Hennenkobel Mine), Rabenstein, Zwiesel, Regen District, Lower Bavaria, Bavaria, Germany
Data Identifiers
Mindat Occurrence Record ID:91806
Long-form Identifier:1:3:91806:4
GUID (UUID V4):0
Nearest other occurrences of Dufrénite
84.1km (52.3 miles) ⓘHagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
86.0km (53.4 miles) ⓘKreuzberg (Rose quartz cliff), Pleystein, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
92.3km (57.3 miles) ⓘHrbek Mine, Svatá Dobrotivá (St Benigna), Zaječov, Beroun District, Central Bohemian Region, Czech Republic
92.9km (57.7 miles) ⓘTěškov quarry (Lom Knezska hora), Těškov, Rokycany District, Plzeň Region, Czech Republic
References
Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
Habel, Martin (2006) Neues vom Hühnerkobel bei Rabenstein/Zwiesel, Bayerischer Wald [News from the Hühnerkobel near Rabenstein/Zwiesel, Bavarian Forest]. Mineralien-Welt, 17 (2). 16-32
 
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