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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Chalcedony from
Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy


03795470017364046665826.jpg
Blue Chalcedony

Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
06046540017364046669822.jpg
Chalcedony

Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
05833160017272049343776.jpg
Chalcedony

Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
03625510017272739704644.jpg
Blue Chalcedony

Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
06046540017364046669822.jpg
Chalcedony

Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
05833160017272049343776.jpg
Chalcedony

Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
03625510017272739704644.jpg
Blue Chalcedony

Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
06046540017364046669822.jpg
Chalcedony

Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
05833160017272049343776.jpg
Chalcedony

Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
Locality type:Quarry
Classification
Species:Quartz var: Chalcedony
Formula:SiO2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chalcedony data
Locality Data:Click here to view Mt Oladri Quarries, Monastir, South Sardinia Province, Sardinia, Italy
Photo GalleryView Gallery (2 photos)
Data Identifiers
Mindat Occurrence Record ID:950366
Long-form Identifier:1:3:950366:3
GUID (UUID V4):0
Nearest other occurrences of Chalcedony
26.3km (16.3 miles) ⓘSerra s'Ilixi Mine, Sinnai, Metropolitan City of Cagliari, Sardinia, Italy
34.6km (21.5 miles) ⓘMaciurru Mine, Domusnovas, South Sardinia Province, Sardinia, Italy
38.7km (24.1 miles) ⓘGiovanni Bonu Mine, San Vito, South Sardinia Province, Sardinia, Italy
41.2km (25.6 miles) ⓘPunta Santa Vittoria, Pula, Metropolitan City of Cagliari, Sardinia, Italy
43.0km (26.7 miles) ⓘCapo di Pula (Capo Pula; Nora), Pula, Metropolitan City of Cagliari, Sardinia, Italy
43.5km (27.0 miles) ⓘTiny-Arenas Mine, Fluminimaggiore, South Sardinia Province, Sardinia, Italy
44.6km (27.7 miles) ⓘBaccu Locci Mine, Villaputzu, South Sardinia Province, Sardinia, Italy
58.3km (36.2 miles) ⓘPunta Su Guardianu prospect, Arbus, South Sardinia Province, Sardinia, Italy
References
Bortolozzi, Giorgio (n.d.) Personal Communication.
 
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