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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Sanidine from
Tre Croci, Vetralla, Viterbo Province, Lazio, Italy


08880740017271920856462.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
01006440017272002122947.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
08388740017272002136878.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
02783930017272002158524.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
02754750017866506063227.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
08824760017362334742717.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
02228380017362334752060.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
02783930017272002158524.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
08880740017271920856462.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
05531080017272002175392.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
08388740017272002136878.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
02783930017272002158524.jpg
Sanidine

Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
Locality type:Village
Classification
Species:Sanidine
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Ciprianiite6
Titanite3
Vonsenite3
Danburite3
Thorite2
Magnetite2
Piergorite-(Ce)1
Clinopyroxene Subgroup1
Zircon1
Biotite1
Tadzhikite-(Ce)1
Data
Mineral Data:Click here to view Sanidine data
Locality Data:Click here to view Tre Croci, Vetralla, Viterbo Province, Lazio, Italy
Photo GalleryView Gallery (9 photos)
Data Identifiers
Mindat Occurrence Record ID:617697
Long-form Identifier:1:3:617697:6
GUID (UUID V4):0
Nearest other occurrences of Sanidine
2.4km (1.5 miles) ⓘPian di San Martino, Vetralla, Viterbo Province, Lazio, Italy
3.2km (2.0 miles) ⓘLa Botte (Botte), Vetralla, Viterbo Province, Lazio, Italy
4.1km (2.5 miles) ⓘCastellaccio di Petrignano, Viterbo, Viterbo Province, Lazio, Italy
5.7km (3.6 miles) ⓘSan Martino al Cimino, Viterbo, Viterbo Province, Lazio, Italy
6.2km (3.8 miles) ⓘCassia Road km 61.5, Capranica, Viterbo Province, Lazio, Italy
8.0km (5.0 miles) ⓘCampo Padella, Capranica, Viterbo Province, Lazio, Italy
12.2km (7.6 miles) ⓘBagnaia, Viterbo, Viterbo Province, Lazio, Italy
13.7km (8.5 miles) ⓘLe Piagge, Soriano nel Cimino, Viterbo Province, Lazio, Italy
21.0km (13.0 miles) ⓘSH2 deep well, Bracciano, Metropolitan City of Rome Capital, Lazio, Italy
21.2km (13.2 miles) ⓘSasso della Strega, Tolfa, Metropolitan City of Rome Capital, Lazio, Italy
References
Ventura, Giancarlo Della, Bonazzi, Paola, Oberti, Roberta, Ottolini, Luisa (2002) Ciprianiite and mottanaite-(Ce), two new minerals of the hellandite group from Latium (Italy) American Mineralogist, 87 (5) 739-744 doi:10.2138/am-2002-5-617
Boiocchi, M. (2006) The crystal structure of piergorite-(Ce), Ca8Ce2(Al0.5 Fe0.53+)Σ1([],Li,Be)2Si6B8O36(OH,F)2: A new borosilicate from Vetralla, Italy, with a modified hellandite-type chain. American Mineralogist, 91 (7). 1170-1177 doi:10.2138/am.2006.2139
 
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