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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Stilbite Subgroup from
Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland


Locality type:Quarry
Classification
Species:'Stilbite Subgroup' (not an IMA approved species)
Formula:M6-7[Al8-9Si27-28O72] · nH2O
Comments:Weiß (2000) states that the mineral reported as stilbite is shown by single-crystal XRD to be stellerite
Confirmation
Validity:Erroneously Reported
Associated Minerals Based on Photo Data:
Prehnite3
Quartz3
K Feldspar2
- var Adularia2
Epidote2
Chlorite Group2
Scolecite1
Data
Mineral Data:Click here to view Stilbite Subgroup data
Locality Data:Click here to view Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
Photo GalleryView Gallery (6 photos)
Data Identifiers
Mindat Occurrence Record ID:43548
Long-form Identifier:1:3:43548:2
GUID (UUID V4):0
Nearest other occurrences of Stilbite Subgroup
25.4km (15.8 miles) Schiesone Creek, Rifugio Il Biondo, Schiesone Valley, Prata Camportaccio, Sondrio Province, Lombardy, Italy
30.4km (18.9 miles) Camperio, Santa Maria Valley, Blenio Valley, Blenio, Ticino, Switzerland
33.1km (20.6 miles) Tumbler, Soglio, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
34.5km (21.4 miles) Gneiss quarry, Promontogno, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
37.2km (23.1 miles) Cengal glacier, Bondasca Valley, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
37.8km (23.5 miles) Ils Umens, Val Casatscha, Val Cristallina, Val Medel, Medel (Lucmagn), Surselva Region, Grisons, Switzerland
38.0km (23.6 miles) Gneiss quarries, Riveo, Maggia, Vallemaggia, Ticino, Switzerland
39.7km (24.7 miles) East slope, Piz Cacciabella, Albigna Valley, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
40.0km (24.9 miles) Albigna glacier, Albigna Valley, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
41.4km (25.7 miles) Pizzo Alzasca, Cevio, Vallemaggia, Ticino, Switzerland
References
 
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