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Acanthite : Ag2S | |
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Mt Narba Mine, San Vito, Cagliari Province, Sardinia, Italy 1 mm Acanthite dark grey crystals with calcite - Old specimen from Mt. Narba - Former collection Nedo Garzetti - Jan 2005 |
| © Marco Barsanti | Photo ID: 31246 View Count: 513 |
Acanthite : Ag2S, Silver : Ag | |
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San Giovanni Mine, Punta della Torre, Iglesias, Carbonia-Iglesias Province, Sardinia, Italy 2 mm Black formed Acanthite crystals with Silver into a Dolomite vug - Former collection Nedo Garzetti May 2005 |
| © Marco Barsanti | Photo ID: 38618 View Count: 415 |
Acanthite : Ag2S, Baryte : BaSO4 | |
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San Giovanni Mine, Punta della Torre, Iglesias, Carbonia-Iglesias Province, Sardinia, Italy 1.5 mm Acanthite crystals on Baryte matrix |
| © Marco Barsanti | Photo ID: 71542 View Count: 187 |
Actinolite : ☐Ca2(Mg,Fe2+)5(Si8O22)(OH)2 | |
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Malenco Valley, Sondrio Province, Lombardy, Italy Specimen size 12x10 cm |
| © Marco Barsanti | Photo ID: 9403 View Count: 874 |
Orthoclase (Var: Adularia) : KAlSi3O8, Chlorite Group | |
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Ankogel area, Ankogel group, Hohe Tauern Mts, Carinthia, Austria Adularia crystals completely coated by dark green Chlorite - Size of specimen around 12x6 cm |
| © Marco Barsanti | Photo ID: 8932 View Count: 926 |
Orthoclase (Var: Adularia) : KAlSi3O8, Quartz : SiO2 | |
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Valdicastello Carducci, Pietrasanta, Apuan Alps, Lucca Province, Tuscany, Italy Twinned Adular crystals - size 10 mm |
| © Marco Barsanti | Photo ID: 9245 View Count: 585 |
Orthoclase (Var: Adularia) : KAlSi3O8 | |
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Valdicastello Carducci, Pietrasanta, Apuan Alps, Lucca Province, Tuscany, Italy Twinned adular crystals (max. size 4 mm) |
| © Marco Barsanti | Photo ID: 9643 View Count: 545 |
Orthoclase (Var: Adularia) : KAlSi3O8, Dolomite : CaMg(CO3)2 | |
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Crestola Bassa quarry, Carrara, Apuan Alps, Massa-Carrara Province, Tuscany, Italy Adular crystals size around 8 mm |
| © Marco Barsanti | Photo ID: 9603 View Count: 631 |
Orthoclase (Var: Adularia) : KAlSi3O8 | |
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Fossa degli Angeli quarry, Carrara, Apuan Alps, Massa-Carrara Province, Tuscany, Italy Nice Adularia sample - ruler in cm - |
| © Marco Barsanti | Photo ID: 19880 View Count: 566 |
Aegirine : NaFe3+[Si2O6], Microcline : K[AlSi3O8] | |
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Mt Malosa, Zomba District, Malawi Aegirine crystal size: 75 mm |
| © Marco Barsanti | Photo ID: 8780 View Count: 609 |
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