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Qabri Bahar, Jodha, Somalilandi
Regional Level Types
Qabri Bahar- not defined -
Jodha- not defined -
SomalilandDisputed Territory

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Key
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Latitude & Longitude (WGS84): 10° 36' North , 44° 4' East
Latitude & Longitude (decimal): 10.60000,44.06667
GeoHash:G#: sczk6c8m7
Köppen climate type:BWh : Hot deserts climate


Brown opal nodules, with intense play-of-color, from Miocene felsic volcanics.

Locality near Jodha.

On the gem market since the late 1990s.

Easily confused with similar brown opals from Shewa province, Ethiopia.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


1 valid mineral.

Detailed Mineral List:

Opal
Formula: SiO2 · nH2O
Reference: Journal of Gemmology, 28:81-84 (2002).
Opal var: Precious Opal
Formula: SiO2 · nH2O
Reference: Journal of Gemmology, 28:81-84 (2002).

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Opal4.DA.10SiO2 · nH2O
var: Precious Opal4.DA.10SiO2 · nH2O

List of minerals arranged by Dana 8th Edition classification

Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O
Unclassified Minerals, Mixtures, etc.
var: Precious Opal-SiO2 · nH2O

List of minerals for each chemical element

HHydrogen
H Opal (var: Precious Opal)SiO2 · nH2O
H OpalSiO2 · nH2O
OOxygen
O Opal (var: Precious Opal)SiO2 · nH2O
O OpalSiO2 · nH2O
SiSilicon
Si Opal (var: Precious Opal)SiO2 · nH2O
Si OpalSiO2 · nH2O

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Quaternary
0 - 2.588 Ma



ID: 3311248

Age: Pleistocene (0 - 2.588 Ma)

Lithology: Sedimentary

Reference: Thiéblemont, D. (ed.). New edition of the 1:10,000,000 geological map of Africa. CGMW-BRGM. [190]

Paleogene
23.03 - 66 Ma



ID: 3186103
Cenozoic sedimentary rocks

Age: Paleogene (23.03 - 66 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Journal of Gemmology (2002) 28, 81-84.

External Links



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