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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Gismondine-Ca from
Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany


05319100017272002438615.jpg
Gismondine-Ca

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
09459740017272002489074.jpg
Gismondine-Ca, etc.

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
07453750017272002505029.jpg
Gismondine-Ca

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
02146330017363108417080.jpg
Gismondine-Ca, etc.

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
07106100017372014859289.jpg
Gismondine-Ca

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
04425940017372014861258.jpg
Gismondine-Ca, etc.

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
08359690017372014866914.jpg
Gismondine-Ca

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
02146330017363108417080.jpg
Gismondine-Ca, etc.

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
05319100017272002438615.jpg
Gismondine-Ca

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
09459740017272002489074.jpg
Gismondine-Ca, etc.

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
07453750017272002505029.jpg
Gismondine-Ca

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
00215620017395896526245.jpg
Gismondine-Ca, etc.

Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Locality type:Quarry
Classification
Species:Gismondine-Ca
Formula:CaAl2Si2O8 · 4H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Wollastonite3
Nordstrandite2
'Unnamed (Cu-Mg-Silicate)'2
Cuprorivaite2
Phillipsite Subgroup1
Diopside1
Willhendersonite1
Data
Mineral Data:Click here to view Gismondine-Ca data
Locality Data:Click here to view Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Photo GalleryView Gallery (6 photos)
Data Identifiers
Mindat Occurrence Record ID:360751
Long-form Identifier:1:3:360751:0
GUID (UUID V4):0
Localities for Gismondine-Ca in this Region
Xenolith CS-029, Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Xenolith CS-034 (Alfredcasparite-bearing xenolith), Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Xenolith CS-050, Caspar quarry, Ettringen, Vordereifel, Mayen-Koblenz, Rhineland-Palatinate, Germany
Nearest other occurrences of Gismondine-Ca
2.4km (1.5 miles) ⓘSeekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
2.4km (1.5 miles) ⓘXenolith CS-090 (Hopmannite type locality), Seekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
2.7km (1.7 miles) ⓘXenolith CS-008 (Bellbergite type-locality), Seekante, Mayen, Mayen-Koblenz, Rhineland-Palatinate, Germany
5.8km (3.6 miles) ⓘRothenberg Quarry, Bell, Mendig, Mayen-Koblenz, Rhineland-Palatinate, Germany
10.1km (6.3 miles) ⓘSchellkopf, Brenk, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
12.6km (7.8 miles) ⓘHannebacher Ley, Hannebach, Spessart, Brohltal, Ahrweiler, Rhineland-Palatinate, Germany
36.4km (22.6 miles) ⓘArensberg, Zilsdorf, Walsdorf, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
36.9km (22.9 miles) ⓘLöhley, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
37.8km (23.5 miles) ⓘEmmelberg, Üdersdorf, Daun, Vulkaneifel, Rhineland-Palatinate, Germany
40.7km (25.3 miles) ⓘGraulay quarry, Hillesheim, Gerolstein, Vulkaneifel, Rhineland-Palatinate, Germany
References
Hentschel, G. (1975) Die Mineralien der basaltischen Gesteine im Laacher Vulkangebiet. Der Aufschluss, 26 (2) 65-87
 
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