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Mandera, Hargeisa (Hargeysa), Somalilandi
Regional Level Types
Mandera- not defined -
Hargeisa (Hargeysa)- not defined -
SomalilandDisputed Territory

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Latitude & Longitude (WGS84): 9° 57' 3'' North , 44° 41' 41'' East
Latitude & Longitude (decimal): 9.95085,44.69475
GeoHash:G#: sczb953xz
Köppen climate type:BWh : Hot deserts climate


Gem mining locality between Hargeisa and the coastal town of Barbera.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


3 valid minerals.

Detailed Mineral List:

Beryl
Formula: Be3Al2(Si6O18)
Reference: The 1995 ICA World Gemstone Mining Report/Part 1 ICA Gazette
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Reference: The 1995 ICA World Gemstone Mining Report/Part 1 ICA Gazette
Beryl var: Emerald
Formula: Be3Al2(Si6O18)
Reference: The 1995 ICA World Gemstone Mining Report/Part 1 ICA Gazette
Pyrope
Formula: Mg3Al2(SiO4)3
Reference: The 1995 ICA World Gemstone Mining Report/Part 1 ICA Gazette
Quartz
Formula: SiO2
Reference: The 1995 ICA World Gemstone Mining Report/Part 1 ICA Gazette
Quartz var: Amethyst
Formula: SiO2
Reference: The 1995 ICA World Gemstone Mining Report/Part 1 ICA Gazette

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
Group 9 - Silicates
Beryl9.CJ.05Be3Al2(Si6O18)
var: Aquamarine9.CJ.05Be3Al2Si6O18
var: Emerald9.CJ.05Be3Al2(Si6O18)
Pyrope9.AD.25Mg3Al2(SiO4)3

List of minerals arranged by Dana 8th Edition classification

Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Pyrope51.4.3a.1Mg3Al2(SiO4)3
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Beryl
var: Aquamarine
-Be3Al2Si6O18
var: Emerald-Be3Al2(Si6O18)
Quartz
var: Amethyst
-SiO2

List of minerals for each chemical element

BeBeryllium
Be Beryl (var: Emerald)Be3Al2(Si6O18)
Be Beryl (var: Aquamarine)Be3Al2Si6O18
Be BerylBe3Al2(Si6O18)
OOxygen
O Beryl (var: Emerald)Be3Al2(Si6O18)
O Beryl (var: Aquamarine)Be3Al2Si6O18
O QuartzSiO2
O Quartz (var: Amethyst)SiO2
O PyropeMg3Al2(SiO4)3
O BerylBe3Al2(Si6O18)
MgMagnesium
Mg PyropeMg3Al2(SiO4)3
AlAluminium
Al Beryl (var: Emerald)Be3Al2(Si6O18)
Al Beryl (var: Aquamarine)Be3Al2Si6O18
Al PyropeMg3Al2(SiO4)3
Al BerylBe3Al2(Si6O18)
SiSilicon
Si Beryl (var: Emerald)Be3Al2(Si6O18)
Si Beryl (var: Aquamarine)Be3Al2Si6O18
Si QuartzSiO2
Si Quartz (var: Amethyst)SiO2
Si PyropeMg3Al2(SiO4)3
Si BerylBe3Al2(Si6O18)

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

Neoproterozoic
541 - 1000 Ma



ID: 3306454

Age: Neoproterozoic (541 - 1000 Ma)

Lithology: Metamorphic

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

Paleoproterozoic - Archean
1600 - 4000 Ma



ID: 3192173
Archean-Paleoproterozoic crystalline metamorphic rocks

Age: Precambrian (1600 - 4000 Ma)

Lithology: Crystalline metamorphic 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


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