Latitude & Longitude (WGS84):
4° 28' 59'' South , 41° 30' 0'' West
Latitude & Longitude (decimal):
Köppen climate type:
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Regions containing this locality
|South America Plate||Tectonic Plate|
Select Mineral List TypeStandard Detailed Strunz Dana Chemical Elements
Detailed Mineral List:
| ⓘ Opal|
Formula: SiO2 · nH2O
Reference: Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (p. 70).
List of minerals arranged by Strunz 10th Edition classification
|Group 4 - Oxides and Hydroxides|
|ⓘ||Opal||4.DA.10||SiO2 · nH2O|
List of minerals arranged by Dana 8th Edition classification
|Group 75 - TECTOSILICATES Si Tetrahedral Frameworks|
|Si Tetrahedral Frameworks - SiO2 with H2O and organics|
|ⓘ||Opal||126.96.36.199||SiO2 · nH2O|
List of minerals for each chemical element
|H||ⓘ Opal||SiO2 · nH2O|
|O||ⓘ Opal||SiO2 · nH2O|
|Si||ⓘ Opal||SiO2 · nH2O|
Sort byYear (asc) Year (desc) Author (A-Z) Author (Z-A)
Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (p. 70).
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