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Wegeltena (Wegel Tena), Delanta Woreda, South Wello (Welo; Wollo), Amhara Region, Ethiopiai
Regional Level Types
Wegeltena (Wegel Tena)- not defined -
Delanta Woreda- not defined -
South Wello (Welo; Wollo)- not defined -
Amhara RegionRegion
EthiopiaCountry

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Key
Latitude & Longitude:
10° North , 39° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~114km


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

5 valid minerals.

Detailed Mineral List:

Graphite
Formula: C
Description: "graphitic carbon" inclusions in opal.
Reference: Rondeau, B., Fritsch, E., Mazzero, F., Gauthier, J.-P., Cenki-Tok, B., Bekele, E., Gaillou, E. (2010) Play-of-Color Opal from Wegeltena, Wollo Province, Ethiopia. Gems & Gemology, Vol. 46:2, 90–105.
Hollandite
Formula: Ba(Mn4+6Mn3+2)O16
Description: Ba-bearing Mn oxide, probably hollandite, inclusions in opal.
Reference: Rondeau, B., Fritsch, E., Mazzero, F., Gauthier, J.-P., Cenki-Tok, B., Bekele, E., Gaillou, E. (2010) Play-of-Color Opal from Wegeltena, Wollo Province, Ethiopia. Gems & Gemology, Vol. 46:2, 90–105.
Opal
Formula: SiO2 · nH2O
Pyrite
Formula: FeS2
Description: Microscopic inclusions in opal.
Reference: Rondeau, B., Fritsch, E., Mazzero, F., Gauthier, J.-P., Cenki-Tok, B., Bekele, E., Gaillou, E. (2010) Play-of-Color Opal from Wegeltena, Wollo Province, Ethiopia. Gems & Gemology, Vol. 46:2, 90–105.
Quartz
Formula: SiO2
Reference: Rondeau, B., Fritsch, E., Mazzero, F., Gauthier, J.-P., Cenki-Tok, B., Bekele, E., Gaillou, E. (2010) Play-of-Color Opal from Wegeltena, Wollo Province, Ethiopia. Gems & Gemology, Vol. 46:2, 90–105.
Quartz var: Chalcedony
Formula: SiO2
Reference: Rondeau, B., Fritsch, E., Mazzero, F., Gauthier, J.-P., Cenki-Tok, B., Bekele, E., Gaillou, E. (2010) Play-of-Color Opal from Wegeltena, Wollo Province, Ethiopia. Gems & Gemology, Vol. 46:2, 90–105.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Graphite1.CB.05aC
Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Hollandite4.DK.05aBa(Mn4+6Mn3+2)O16
Opal4.DA.10SiO2 · nH2O
Quartz4.DA.05SiO2
var: Chalcedony4.DA.05SiO2

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Semi-metals and non-metals
Graphite1.3.6.2C
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 7 - MULTIPLE OXIDES
AB8X16
Hollandite7.9.1.1Ba(Mn4+6Mn3+2)O16
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.
Quartz
var: Chalcedony
-SiO2

List of minerals for each chemical element

HHydrogen
H OpalSiO2 · nH2O
CCarbon
C GraphiteC
OOxygen
O OpalSiO2 · nH2O
O Quartz (var: Chalcedony)SiO2
O HollanditeBa(Mn64+Mn23+)O16
O QuartzSiO2
SiSilicon
Si OpalSiO2 · nH2O
Si Quartz (var: Chalcedony)SiO2
Si QuartzSiO2
SSulfur
S PyriteFeS2
MnManganese
Mn HollanditeBa(Mn64+Mn23+)O16
FeIron
Fe PyriteFeS2
BaBarium
Ba HollanditeBa(Mn64+Mn23+)O16

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Chauviré, B., Rondeau, B., Mazzero, F., Ayalew, D. (2017) The Precious Opal Deposit At Wegel Tena, Ethiopia: Formation VIA Successive Pedogenesis Events. The Canadian Mineralogist, 55:4, 701.
Rondeau, B., Fritsch, E., Mazzero, F., Gauthier, J.-P., Cenki-Tok, B., Bekele, E., Gaillou, E. (2010) Play-of-Color Opal from Wegeltena, Wollo Province, Ethiopia. Gems & Gemology, Vol. 46:2, 90–105.

Localities in this Region

Other Regions, Features and Areas containg this locality

Africa
African PlateTectonic Plate

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