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Pedro II, Piauí, Brazili
Regional Level Types
Pedro IIMunicipality
PiauíState
BrazilCountry

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Key
Locality type:
Largest Settlements:
PlacePopulation
Pedro II22,038 (2012)
Other Languages:
French:
Pedro II, Piauí, Brésil
German:
Pedro II, Piauí, Brasilien
Italian:
Pedro II, Piauí, Brasile
Portuguese:
Pedro II, Piauí, Brasil
Russian:
Педру-II , Пиауи, Бразилия
Simplified Chinese:
佩德罗二世城, 皮奧伊, 巴西
Spanish:
Pedro II, Piauí, Brasil
Basque:
Pedro II , Piauí, Brasil
Bishnupriya Manipuri:
পেড্রো ঈ, পিয়াউই, ব্রাজিল
Cebuano:
Pedro II , Piauí, Brasil
Dutch:
Pedro II, Piauí, Brazilië
Georgian:
პედრუ II , პიაუი, ბრაზილია
Hungarian:
Pedro II, Piauí, Brazília
Minnan / Hokkien-Taiwanese:
Pedro II, Piauí, Pa-se
Norwegian:
Pedro II, Piauí, Brasil
Swedish:
Pedro II , Piauí, Brasilien
Vietnamese:
Pedro II, Piauí, Brasil
Volapük:
Pedro II, Piauí, Brasilän
Waray:
Pedro II, Piauí, Brasil


An area with precious opal, reportedly discovered by J.R. Sauer in 1960.

Potch opal, white opal, black opal, gray opal, semi-black opal, rolling flash, broad flash opal, exploding flash opal, mackerel sky opal, flame opal, flash-of-fire opal, harlequin opal, floral pattern opal, pinfire opal.

"Other occurrences in the Pedro II district are Cantinho, Bom Lugar, Limão, Centro, Mamoeiro, Morro do Meio and Barra." [Sauer, 1982, p. 70]

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

2 valid minerals.

Detailed Mineral List:

Opal
Formula: SiO2 · nH2O
Localities: Reported from at least 15 localities in this region.
Opal var: Black Opal
Formula: SiO2 · nH2O
Reference: Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (p. 70).
Opal var: Precious Opal
Formula: SiO2 · nH2O
Reference: Sauer, Jules Roger (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (p. 3).
Quartz
Formula: SiO2
Reference: Beih. z. Eur. J. Mineral 18 (2006) 49
Quartz var: Amethyst
Formula: SiO2
Reference: Beih. z. Eur. J. Mineral 18 (2006) 49
Quartz var: Chalcedony
Formula: SiO2
Reference: Beih. z. Eur. J. Mineral 18 (2006) 49
Quartz var: Rock Crystal
Formula: SiO2
Reference: Beih. z. Eur. J. Mineral 18 (2006) 49

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Opal4.DA.10SiO2 · nH2O
var: Black Opal4.DA.10SiO2 · nH2O
var: Precious Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Chalcedony4.DA.05SiO2
var: Rock Crystal4.DA.05SiO2

List of minerals arranged by Dana 8th Edition classification

Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
var: Black Opal-SiO2 · nH2O
var: Precious Opal-SiO2 · nH2O
Quartz
var: Amethyst
-SiO2
var: Chalcedony-SiO2
var: Rock Crystal-SiO2

List of minerals for each chemical element

HHydrogen
H OpalSiO2 · nH2O
H Opal (var: Precious Opal)SiO2 · nH2O
H Opal (var: Black Opal)SiO2 · nH2O
OOxygen
O Quartz (var: Chalcedony)SiO2
O Quartz (var: Rock Crystal)SiO2
O Quartz (var: Amethyst)SiO2
O OpalSiO2 · nH2O
O QuartzSiO2
O Opal (var: Precious Opal)SiO2 · nH2O
O Opal (var: Black Opal)SiO2 · nH2O
SiSilicon
Si Quartz (var: Chalcedony)SiO2
Si Quartz (var: Rock Crystal)SiO2
Si Quartz (var: Amethyst)SiO2
Si OpalSiO2 · nH2O
Si QuartzSiO2
Si Opal (var: Precious Opal)SiO2 · nH2O
Si Opal (var: Black Opal)SiO2 · nH2O

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Sauer, J.R. (1982) Brazil, Paradise of Gemstones. Gemological Institute of America, 135 pp. (pp. 3, 68, 70-71).
Beiheft zu European Journal of Mineralogy 18 (2006) 49.
de Brito Barreto, S. and Bretas Bittar, S.M. (2010) Los depósitos de gemas de Brasil: localización, producción e impacto económico. Boletín de la Sociedad Geológica Mexicana, 62(1), 123-140.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Pedro_II,_Piau%C3%AD
Wikidata ID:Q1934329
GeoNames ID:3392431

Localities in this Region

Other Regions, Features and Areas that Intersect

South America PlateTectonic Plate

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