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 al Quattrino, Pomarance, Pisa Province, Tuscany, Italy


Locality type:Mountain
Classification
Species:Quartz
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Quartz data
Locality Data:Click here to view Poggio al Quattrino, Pomarance, Pisa Province, Tuscany, Italy
Data Identifiers
Mindat Occurrence Record ID:494641
Long-form Identifier:1:3:494641:0
GUID (UUID V4):0
Nearest other occurrences of Quartz
2.6km (1.6 miles) ⓘMicciano, Pomarance, Pisa Province, Tuscany, Italy
4.2km (2.6 miles) ⓘMonterufoli, Pomarance, Pisa Province, Tuscany, Italy
4.3km (2.7 miles) ⓘMalentrata, Pomarance, Pisa Province, Tuscany, Italy
5.5km (3.4 miles) ⓘLa Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
5.7km (3.5 miles) ⓘLa Sassa carbonate vein, La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
6.0km (3.7 miles) ⓘPoggio Castiglione, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
6.2km (3.9 miles) ⓘBotro del Confine (La Sassa vein system), La Sassa, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
9.0km (5.6 miles) ⓘCanneto Mount, Canneto, Monteverdi Marittimo, Pisa Province, Tuscany, Italy
10.8km (6.7 miles) ⓘCampo di Sasso, Bibbona, Livorno Province, Tuscany, Italy
12.5km (7.7 miles) ⓘMontecatini Mine, Montecatini Val di Cecina, Pisa Province, Tuscany, Italy
References
Orlandi P., (2005). Geositi minerari e mineralogici della provincia di Pisa. In: La geologia della provincia di Pisa. Cartografia, geositi e banche dati, Provincia di Pisa, Italy, pp. 55-280.
 
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