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


05026150017362446384993.jpg
Phillipsite Subgroup

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
07372190017271980056724.jpg
Phillipsite Subgroup, etc.

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
05071440017271980146035.jpg
Phillipsite Subgroup, etc.

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
09127440017271980191091.jpg
Phillipsite Subgroup

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
05026150017362446384993.jpg
Phillipsite Subgroup

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
07498580017368344242217.jpg
Phillipsite Subgroup, etc.

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
05903480017368344258411.jpg
Phillipsite Subgroup, etc.

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
00147790017368344268242.jpg
Phillipsite Subgroup

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
02940070017368344269882.jpg
Phillipsite Subgroup

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
07372190017271980056724.jpg
Phillipsite Subgroup, etc.

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
05071440017271980146035.jpg
Phillipsite Subgroup, etc.

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
09127440017271980191091.jpg
Phillipsite Subgroup

Höwenegg Quarry, Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
Locality type:Open-Cast Mine
Classification
Species:'Phillipsite Subgroup' (not an IMA approved species)
Formula:(Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Calcite7
Natrolite6
Offretite4
Montmorillonite2
Aragonite1
Mesolite1
Thomsonite-Ca1
Data
Mineral Data:Click here to view Phillipsite Subgroup data
Locality Data:Click here to view Höwenegg Quarry (Hewenegg Quarry), Immendingen, Tuttlingen, Freiburg Region, Baden-Württemberg, Germany
Photo GalleryView Gallery (9 photos)
Data Identifiers
Mindat Occurrence Record ID:59857
Long-form Identifier:1:3:59857:8
GUID (UUID V4):0
Nearest other occurrences of Phillipsite Subgroup
81.7km (50.7 miles) ⓘTotenkopf, Bickensohl, 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
82.4km (51.2 miles) ⓘStrümpflekopf, Bickensohl, Vogtsburg im Kaiserstuhl, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany
88.5km (55.0 miles) ⓘQuarry VI, Limberg Quarries, Sasbach am Kaiserstuhl, Emmendingen, Freiburg Region, Baden-Württemberg, Germany
88.6km (55.0 miles) ⓘHumberg quarries, Burkheim, Vogtsburg im Kaiserstuhl, Breisgau-Hochschwarzwald, Freiburg Region, Baden-Württemberg, Germany
88.6km (55.1 miles) ⓘQuarry I, Limberg Quarries, Sasbach am Kaiserstuhl, Emmendingen, Freiburg Region, Baden-Württemberg, Germany
88.7km (55.1 miles) ⓘQuarry II, Limberg Quarries, Sasbach am Kaiserstuhl, Emmendingen, Freiburg Region, Baden-Württemberg, Germany
References
Tschernich, Rudy W. (1992) Zeolites of the World. Geoscience Press, Inc. 567pp.
 
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