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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Prehnite from
Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany


04401900017272024684209.jpg
Prehnite

Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
08433370017272024942942.jpg
Prehnite, etc.

Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
04728400017272024968306.jpg
Prehnite

Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
04401900017272024684209.jpg
Prehnite

Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
04905550017362349739791.jpg
Prehnite, etc.

Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
08293270017362349738880.jpg
Prehnite

Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
04401900017272024684209.jpg
Prehnite

Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
08433370017272024942942.jpg
Prehnite, etc.

Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
04728400017272024968306.jpg
Prehnite

Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
Locality type:Outcrop
Classification
Species:Prehnite
Formula:Ca2Al2Si3O10(OH)2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Clinozoisite1
Data
Mineral Data:Click here to view Prehnite data
Locality Data:Click here to view Wormke bend, Schierke, Wernigerode, Harz, Saxony-Anhalt, Germany
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:40688
Long-form Identifier:1:3:40688:8
GUID (UUID V4):0
Nearest other occurrences of Prehnite
9.3km (5.8 miles) ⓘKönigskopf Quarry, Harz (Landkreis Goslar), Goslar District, Lower Saxony, Germany
13.1km (8.1 miles) ⓘClaus-Friedrich Mine, Beerberg, St Andreasberg, Braunlage, Goslar District, Lower Saxony, Germany
14.7km (9.1 miles) ⓘWäschegrund Quarry, St Andreasberg Mining District, Lower Saxony, Germany
15.1km (9.4 miles) ⓘGabbro Quarry, Radau valley, Bad Harzburg, Goslar District, Lower Saxony, Germany
16.6km (10.3 miles) ⓘHuneberg Quarry, Harz (Landkreis Goslar), Goslar District, Lower Saxony, Germany
30.4km (18.9 miles) ⓘHeimberg quarry, Harz (Landkreis Goslar), Goslar District, Lower Saxony, Germany
References
Haake, R. (1972): Fundgrube 1 (2): 20.
 
and/or  
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