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
Těškov quarry (Lom Knezska hora), Těškov, Rokycany District, Plzeň Region, Czech Republic


04595170017272029721549.jpg
Dufrénite, etc.

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
09273250017272029723579.jpg
Dufrénite

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
06115450017272051851183.jpg
Dufrénite, etc.

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
07112280017272051867026.jpg
Dufrénite, etc.

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
09636040017367644493681.jpg
Dufrénite, etc.

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
04419340017367644504502.jpg
Dufrénite

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
01597790017367644513853.jpg
Dufrénite, etc.

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
01331010017367644522972.jpg
Dufrénite, etc.

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
04595170017272029721549.jpg
Dufrénite, etc.

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
09273250017272029723579.jpg
Dufrénite

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
06115450017272051851183.jpg
Dufrénite, etc.

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
07112280017272051867026.jpg
Dufrénite, etc.

Těškov quarry, Těškov, Rokycany District, Plzeň Region, Czech Republic
Locality type:Quarry
Classification
Species:Dufrénite
Formula:Ca0.5Fe2+Fe53+(PO4)4(OH)6 · 2H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Meurigite-K17
Limonite9
Leucophosphite7
Cacoxenite6
Quartz5
Kidwellite4
Strengite4
Beraunite2
Goethite1
Nontronite1
Data
Mineral Data:Click here to view Dufrénite data
Locality Data:Click here to view Těškov quarry (Lom Knezska hora), Těškov, Rokycany District, Plzeň Region, Czech Republic
Photo GalleryView Gallery (13 photos)
Data Identifiers
Mindat Occurrence Record ID:130477
Long-form Identifier:1:3:130477:0
GUID (UUID V4):0
Nearest other occurrences of Dufrénite
10.9km (6.8 miles) ⓘHrbek Mine, Svatá Dobrotivá (St Benigna), Zaječov, Beroun District, Central Bohemian Region, Czech Republic
81.8km (50.8 miles) ⓘBílý Kámen pegmatite quarry, Lázně Kynžvart, Cheb District, Karlovy Vary Region, Czech Republic
90.7km (56.3 miles) ⓘAhornberg, Bärnau, Tirschenreuth District, Upper Palatinate, Bavaria, Germany
91.3km (56.7 miles) ⓘHagendorf South Pegmatite, Hagendorf, Waidhaus, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
92.9km (57.7 miles) ⓘHühnerkobel Mine (Hennenkobel Mine), Rabenstein, Zwiesel, Regen District, Lower Bavaria, Bavaria, Germany
94.8km (58.9 miles) ⓘKreuzberg (Rose quartz cliff), Pleystein, Neustadt an der Waldnaab District, Upper Palatinate, Bavaria, Germany
98.1km (61.0 miles) ⓘGroßklenau, Tirschenreuth, Tirschenreuth District, Upper Palatinate, Bavaria, Germany
References
Janouš, F. (1995): Minerály z Kněží hory u Těškova (okres Rokycany). Minerál, 3 (6), 367-369.
 
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