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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Nepheline from
Höwenegg Quarry (Hewenegg Quarry), Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany


06167820017368199785276.jpg
Nepheline, etc.

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
06167820017368199785276.jpg
Nepheline, etc.

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
08975800017272011825366.jpg
Nepheline, etc.

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
Locality type:Open-Cast Mine
Classification
Species:Nepheline
Formula:Na3K(Al4Si4O16)
Confirmation
Validity:Believed Valid
Associated Minerals:
Associates:Amicite
Aragonite
Calcite
Merlinoite
Associated Minerals Based on Photo Data:
Augite2
Melilite Group2
Data
Mineral Data:Click here to view Nepheline data
Locality Data:Click here to view Höwenegg Quarry (Hewenegg Quarry), Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
Data Identifiers
Mindat Occurrence Record ID:174103
Long-form Identifier:1:3:174103:2
GUID (UUID V4):0
Nearest other occurrences of Nepheline
12.9km (8.0 miles) ⓘHohenstoffeln, Weiterdingen, Hilzingen, Konstanz, Freiburg Region, Baden-Württemberg, Germany
13.8km (8.6 miles) ⓘBlauer Stein, Randen, Blumberg, Schwarzwald-Baar-Kreis, Freiburg Region, Baden-Württemberg, Germany
23.4km (14.6 miles) ⓘRamsen olivine nephelinite dike, Ramsen, Schaffhausen, Switzerland
51.3km (31.9 miles) ⓘHinterhauenstein, Hornberg, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany
81.9km (50.9 miles) ⓘBadloch Quarry, Oberbergen, Vogtsburg im Kaiserstuhl, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany
82.1km (51.0 miles) ⓘHorberig, Oberbergen, Vogtsburg im Kaiserstuhl, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany
83.0km (51.6 miles) ⓘSouthern Rhine Graben, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany
85.4km (53.0 miles) ⓘUrach Volcanic District, Reutlingen, Tübingen Region, Baden-Württemberg, Germany
References
Weiß, Stefan (1990) Mineralfundstellen Atlas Deutschland West. Christian Weise Verlag, Munich, Germany. 320pp.
Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc. 567pp.
 
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