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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Gibbsite from
Michelsberg Quarry, Katzenbuckel, Waldkatzenbach, Waldbrunn, Neckar-Odenwald-Kreis, Karlsruhe Region, Baden-Württemberg, Germany


01860160017866630004705.jpg
Gibbsite

Michelsberg Quarry, Katzenbuckel, Waldkatzenbach, Waldbrunn, Neckar-Odenwald-Kreis, Karlsruhe Region, Baden-Württemberg, Germany
01072450017700977814269.jpg
Gibbsite, etc.

Michelsberg Quarry, Katzenbuckel, Waldkatzenbach, Waldbrunn, Neckar-Odenwald-Kreis, Karlsruhe Region, Baden-Württemberg, Germany
07008040017272736701438.jpg
Gibbsite

Michelsberg Quarry, Katzenbuckel, Waldkatzenbach, Waldbrunn, Neckar-Odenwald-Kreis, Karlsruhe Region, Baden-Württemberg, Germany
01072450017700977814269.jpg
Gibbsite, etc.

Michelsberg Quarry, Katzenbuckel, Waldkatzenbach, Waldbrunn, Neckar-Odenwald-Kreis, Karlsruhe Region, Baden-Württemberg, Germany
07008040017272736701438.jpg
Gibbsite

Michelsberg Quarry, Katzenbuckel, Waldkatzenbach, Waldbrunn, Neckar-Odenwald-Kreis, Karlsruhe Region, Baden-Württemberg, Germany
01072450017700977814269.jpg
Gibbsite, etc.

Michelsberg Quarry, Katzenbuckel, Waldkatzenbach, Waldbrunn, Neckar-Odenwald-Kreis, Karlsruhe Region, Baden-Württemberg, Germany
Locality type:Quarry
Classification
Species:Gibbsite
Formula:Al(OH)3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Natrolite1
Data
Mineral Data:Click here to view Gibbsite data
Locality Data:Click here to view Michelsberg Quarry, Katzenbuckel, Waldkatzenbach, Waldbrunn, Neckar-Odenwald-Kreis, Karlsruhe Region, Baden-Württemberg, Germany
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:164693
Long-form Identifier:1:3:164693:1
GUID (UUID V4):0
Nearest other occurrences of Gibbsite
47.2km (29.3 miles) ⓘWest cut, Rollenberg railway tunnel, Bruchsal, Karlsruhe, Karlsruhe Region, Baden-Württemberg, Germany
References
Aufschluss 1977(6), 226
Betz, V. (1977) Gibbsit vom Katzenbuckel/Odenwald. Der Aufschluss, 28 (2). p.60.
Lapis (1980): 7/8: 41-43.
 
and/or  
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