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Deo Darrah (Deo Darra Mts), Khash & Kuran Wa Munjan Districts, Badakhshan Province (Badakshan Province; Badahsan Province), Afghanistan

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 36° 23' 17'' North , 70° 50' 27'' East (est.)
Margin of Error:~0km
Köppen climate type:ET : Tundra


Deo Darrah (Persian word meaning Valley of Jin) is an old tourmaline mine.

Blue beryl from this locality was originally described as vorobyevite, however analysis has shown no noticeable Cs level (but with higher levels of Na and Ca) so it is essentially an alkali-rich beryl. See http://www.mindat.org/mesg-11-310231.html and http://www.mindat.org/forum.php?read,105,351767,page=1. Analyses of rosettes of tabular aquamarine from "Kuran, district Wamunjan" (probably from Deo Darrah) reported in Weerth & Weiß (2016) show, apart from Na, increased levels of iron (~1.5 wt.% FeO) and cesium (~0.15 wt.% Cs2O), plus traces of scandium (~0,01 wt.% Sc2O3).

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Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

4 valid minerals.

Detailed Mineral List:

Beryl
Formula: Be3Al2(Si6O18)
Reference: Ikram Mohammad colllection
Beryl var: Alkali-beryl
Formula: Be3Al2(Si6O18)
Reference: Rob Lavinsky coll. analized by Federico Pezzota Anatoly Kasatkin, newer analysis in 2015
Beryl var: Aquamarine
Formula: Be3Al2Si6O18
Elbaite
Formula: Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
'Feldspar Group'
Hambergite
Formula: Be2(BO3)(OH)
'Lepidolite'
Quartz
Formula: SiO2
Reference: Ikram Mohammad Collection
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Ikram Mohammad colllection

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 6 - Borates
Hambergite6.AB.05Be2(BO3)(OH)
Group 9 - Silicates
Beryl9.CJ.05Be3Al2(Si6O18)
var: Alkali-beryl9.CJ.05Be3Al2(Si6O18)
var: Aquamarine9.CJ.05Be3Al2Si6O18
Elbaite9.CK.05Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.
Feldspar Group-
Lepidolite-
Tourmaline-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 25 - ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
Monoborates
Hambergite25.1.1.1Be2(BO3)(OH)
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with [Si6O18] rings; possible (OH) and Al substitution
Beryl61.1.1.1Be3Al2(Si6O18)
Six-Membered Rings with borate groups
Elbaite61.3.1.8Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Rocks, etc.
Beryl
var: Alkali-beryl
-Be3Al2(Si6O18)
var: Aquamarine-Be3Al2Si6O18
'Feldspar Group'-
'Lepidolite'-
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
H HambergiteBe2(BO3)(OH)
LiLithium
Li ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
BeBeryllium
Be Beryl (var: Alkali-beryl)Be3Al2(Si6O18)
Be Beryl (var: Aquamarine)Be3Al2Si6O18
Be BerylBe3Al2(Si6O18)
Be HambergiteBe2(BO3)(OH)
BBoron
B ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
B HambergiteBe2(BO3)(OH)
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O Beryl (var: Alkali-beryl)Be3Al2(Si6O18)
O Beryl (var: Aquamarine)Be3Al2Si6O18
O BerylBe3Al2(Si6O18)
O ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
O HambergiteBe2(BO3)(OH)
O QuartzSiO2
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
NaSodium
Na ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al Beryl (var: Alkali-beryl)Be3Al2(Si6O18)
Al Beryl (var: Aquamarine)Be3Al2Si6O18
Al BerylBe3Al2(Si6O18)
Al ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Si Beryl (var: Alkali-beryl)Be3Al2(Si6O18)
Si Beryl (var: Aquamarine)Be3Al2Si6O18
Si BerylBe3Al2(Si6O18)
Si ElbaiteNa(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)
Si QuartzSiO2

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ikram Mohammad (2014) personal communication
Weerth, A. & Weiß, S. (2016): Neues aus der Grenzregion Pakistan/Afghanistan. Lapis, 41 (10), 30-39 (in German).

External Links


Localities in this Region
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Afghanistan
  • Badakhshan Province (Badakshan Province; Badahsan Province)
    • Khash & Kuran Wa Munjan Districts

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