> Minerals > Chalcedony
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Chalcedony
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| Chalcedony
Ametista do Sul (São Gabriel), Alto Uruguai region, Rio Grande do Sul, Brazil
Item-No.: MIN6194 Price: 145.00 EUR
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| Fluorapatite, Chalcedony
Cerro de Mercado Mine, Victoria de Durango, Cerro de los Remedios, Mun. de Durango, Durango, Mexico
Item-No.: MIN0094 Price: 122.00 EUR
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Synonyms: |
Ceracathes, Cerachates, Chalcedone, Chalcedonite, Chalcedononyx, merlinite |
Variety of: |
Quartz |
IMA Status: |
Not recognised as mineral |
Classification: |
Oxides |
Chemical formula: |
SiO2 |
Crystal system: |
Trigonal - microcrystalline, cryptocrystalline |
Density (g/cm3): |
2,6 measured |
Tenacity: |
Brittle |
Cleavage: |
Non Observed |
Fracture: |
Conchoidal, Sub-Conchoidal |
Hardness (Mohs): |
6,5 - 7 |
Colour: |
Colorless, white, gray, blue, any color due to embedded minerals |
Lustre: |
Waxy, Dull |
Streak: |
White |
First recorded locality: |
Kadıköy (Chalcedon), Istanbul Province, Marmara Region, Turkey |
Application: |
Famous as a semi precious jewelry stone |
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