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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Quartz from
Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy


06450400017272030544046.jpg
Chalcedony

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
06687880017272030502480.jpg
Agate

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
09135810017272030557008.jpg
Chalcedony

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
07551910017272244464894.jpg
Chalcedony, etc.

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
03695280017367912195871.jpg
Chalcedony

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
00227230017367912471633.jpg
Agate

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
06653610017367912227617.jpg
Chalcedony

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
06168890017367912715682.jpg
Chalcedony, etc.

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
06450400017272030544046.jpg
Chalcedony

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
06687880017272030502480.jpg
Agate

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
09135810017272030557008.jpg
Chalcedony

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
07551910017272244464894.jpg
Chalcedony, etc.

Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
Locality type:Mountain
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Magnesite2
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Poggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:360690
Long-form Identifier:1:3:360690:2
GUID (UUID V4):0
Nearest other occurrences of Quartz
1.8km (1.1 miles) ⓘMalentrata, Pomarance, Pisa Province, Tuscany, Italy
2.8km (1.7 miles) ⓘMonterufoli, Pomarance, Pisa Province, Tuscany, Italy
3.6km (2.2 miles) ⓘBotro del Confine (La Sassa vein system), La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
3.7km (2.3 miles) ⓘCanneto Mount, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
4.7km (2.9 miles) ⓘLa Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
5.2km (3.2 miles) ⓘLa Sassa carbonate vein, La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
6.0km (3.7 miles) ⓘPoggio al Quattrino, Pomarance, Pisa Province, Tuscany, Italy
7.7km (4.8 miles) ⓘMicciano, Pomarance, Pisa Province, Tuscany, Italy
9.1km (5.7 miles) ⓘCampo di Sasso, Bibbona, Livorno Province, Tuscany, Italy
12.9km (8.0 miles) ⓘFrassine, Monterotondo Marittimo, Grosseto Province, Tuscany, Italy
References
Nannoni, R., Capperi, M., 1989. Miniere e minerali della Val di Cecina. Gruppo Mineralogico Cecinese. Tip. Grafiche Favillini, Livorno.
 
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