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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Grossular from
Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland


09564170017272027322680.jpg
Grossular

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
08808180017272011082025.jpg
Grossular

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
02171400017363284805517.jpg
Hessonite, etc.

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
00792200017369576322634.jpg
Grossular, etc.

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
02527920017369576321136.jpg
Grossular

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
04566570017369576329069.jpg
Grossular

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
02171400017363284805517.jpg
Hessonite, etc.

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
04607920017362779855203.jpg
Grossular, etc.

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
09564170017272027322680.jpg
Grossular

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
08808180017272011082025.jpg
Grossular

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
00048100017369468346908.jpg
Hessonite, etc.

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
00792200017369576322634.jpg
Grossular, etc.

Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
Locality type:Quarry
Classification
Species:Grossular
Formula:Ca3Al2(SiO4)3
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Clinochlore5
Diopside5
Data
Mineral Data:Click here to view Grossular data
Locality Data:Click here to view Gneiss quarries, Arvigo, Calanca, Moesa Region, Grisons, Switzerland
Photo GalleryView Gallery (3 photos)
Data Identifiers
Mindat Occurrence Record ID:43542
Long-form Identifier:1:3:43542:8
GUID (UUID V4):0
Nearest other occurrences of Grossular
7.3km (4.5 miles) ⓘSanta Maria di Claro, Molino Valley, Claro, Bellinzona, Bellinzona, Ticino, Switzerland
29.1km (18.1 miles) ⓘSan Giorgio, Codera Valley, Novate Mezzola, Sondrio Province, Lombardy, Italy
32.3km (20.1 miles) ⓘCodera streambed, Codera Valley, Novate Mezzola, Sondrio Province, Lombardy, Italy
34.3km (21.3 miles) ⓘAverta Valley (Northern Glacial Cirque), Codera Valley, Novate Mezzola, Sondrio Province, Lombardy, Italy
43.6km (27.1 miles) ⓘMuotta Naira (Muota Naira; Motta Naira; Muota Nera), Piz Lai Blau, Val Nalps, Tujetsch, Surselva Region, Grisons, Switzerland
44.6km (27.7 miles) ⓘPiz Lunghin, Casaccia, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
46.2km (28.7 miles) ⓘMonte Sissone, Val Forno, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
46.8km (29.1 miles) ⓘPizzi dei Rossi, Val Forno, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
46.9km (29.1 miles) ⓘCima di Vazzeda, Val Forno, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
47.1km (29.3 miles) ⓘMonte del Forno, Val Forno, Upper Val Bregaglia, Bregaglia, Maloja Region, Grisons, Switzerland
References
Weibel, Max, Graeser, Stefan, Oberholzer, Walter F., Stalder, Hans-Anton, Gabriel, Walter (1990) Die Mineralien der Schweiz [The minerals of Switzerland] (5th ed.) Birkhäuser, Basel, Switzerland. p.1-222. doi:10.1007/978-3-0348-7132-7
Weiß, Stefan; Forster, Otmar (1997) Arvigo, Val Calanca: Kluftmineralien aus dem Süden Graubündens [Arvigo, Val Calanca: Cleft minerals from southern Graubünden]. Lapis, 22 (6). 13-42; 62
Stalder, Hans Anton; Wagner, Albert; Graeser, Stefan; Stuker, Peter (1998) Mineralienlexikon der Schweiz. Wepf Verlag. 579pp.p.474
 
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