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Sar-e-Sang River, Sar-e Sang (Sar Sang; Sary Sang), Koksha Valley (Kokscha Valley; Kokcha Valley), 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° North , 70° East (est.)
Margin of Error:~3km
Locality type:River
Köppen climate type:ET : Tundra


About 5 Km from Ladjuar Medan there is a skarn marble horizon cut through by the Sar-e-Sang River, very close to where it flows into the Koksha River. This gives deposits on both banks of the Sar-e-Sang River. (Dudley Blauwet (2013)Priv. Comm.) That horizon contains Haüyne, both green and blue and partially replaced by Gonnardite. Fine Marialites and Pargasites occur associated with the Haüyne.

A small number of light green Haüyne specimens were recovered in 2008 from here. Only recently was it noted that there is a very minor alteration to gonnardite on at least one of them. By 2009 the blue Haüynes with gonnardite replacement were being recovered. A few specimens of Pargasite soon followed and by 2013 a Pargasite with dark green Haüyne was found. Also in that find were the dark green Haüynes showing a slight colour change with the Haüyne being greener, the bluer the light source. This happens to a lesser extent with the earlier lighter green Haüynes

Like the Baffin Island green "lazurite" this light green Haüyne has a cell edge of 9.05 A. The problem is that no natural sulfide dominant Lazurite has ever been observed. They can be synthesized but are unstable. All 'Lazurite' specimens are actually sulfate dominant Haüyne. The specious argument to call some powder patterns Lazurite stems from the observation that sulfide is smaller than sulfate and so Haüynes with small unit cells should have more sulfide, but there is never enough to be sulfide dominant.

Alternative Label Names

This is a list of additional names that have been recorded for mineral labels associated with this locality in the minID database. This may include previous versions of the locality name hierarchy from mindat.org, data entry errors, and it may also include unconfirmed sublocality names or other names that can only be matched to this level.

Koksha Valley, Sar e Sang, Badakhshan, Afghanistan
Sar-e-Sang, Kokeha Valley, Badakhshan Province, Afghanistan
Sar-e-Sang, Koksha valley, Badakshan, Afghanistan

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

Afghanite
Formula: (Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Habit: anhedral grains
Colour: transparent blue
Description: Known as small trasparent grains in calcite also containing a large altering hauyne in American Museum of Natural History specimen #112762. Fernando Camara found these to be Afghanites by SCXRD.
Reference: Fernando Camara (2013) Private Communication
Albite
Formula: Na(AlSi3O8)
Habit: Blocky prisms
Colour: Blue white
Fluorescence: Pale Blue in LW , Strong Blue in SW
Reference: Moore, T.P.,Woodside, R.M.W. (2014): The Sar-e-Sang Lapis Mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. Mineralogical Record 45 (3), 280-336.
Albite var: Low Albite
Formula: Na(AlSi3O8)
Reference: RWMW Collection
'Albite-Anorthite Series'
Description: The green and blue Hauynes from here alter to a snow white mineral. Intially this was analysed with EDS and that was interpreted as plagioclase. The Al to Si ratio was one to one just like the sodalite group. However it returns a PXRD pattern of Gonnardite and not plagioclase.
Reference: RWMW Collection
Calcite
Formula: CaCO3
Habit: simple rhombs
Description: A major component of the marbles
Reference: Moore, T.P.,Woodside, R.M.W. (2014): The Sar-e-Sang Lapis Mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. Mineralogical Record 45 (3), 280-336.
Gonnardite
Formula: (Na,Ca)2(Si,Al)5O10 · 3H2O
Habit: Pseudomorphing Hauyne dodecs
Colour: white
Fluorescence: White in LW, MW & SW UV
Description: This was initially called plagioclase, confirmed by EDS. The EDS pattern has the same 1:1 ratio of Al: Si as plagioclase and sodalite group minerals. Gonnardite can have this same EDS. The PXRD of Gonnardite is attached to the Marialite specimen it came from.
Reference: RWMW Collection
Gypsum
Formula: CaSO4 · 2H2O
Colour: white
Fluorescence: white
Description: White patches in Lazurite. PXRD at the Royal Ontario museum
Reference: RWMW Collection
Haüyne
Formula: (Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
Habit: Large dodecs to several cm
Colour: dark blue , blue, dark green , light green
Fluorescence: orangey brown in long wave
Description: The blue Haüyne has a cell edge of 9.08 A (Fernando Camera (2013))and the green 9.05 A.(Fernando Camera (2010) Both have similar modulated structures. A few dozen specimens of green Haüyne were recovered. Dudley Blauwet (2008) has photos of the material in situ. Fewer darker green Haüynes later emerged. PXRD at the Royal Ontario museum gave Lazurite C with gypsum for the early green material (Malcolm Back (2009)). Fernando Camara (2010) found it has a cell edge of 9.05 A and a 45 A modulated structure. A Raman analysis at the University of Arizona gave both Haüyne and Lazurite for the blue Hauyne. The problem is that no natural sulfide dominant Lazurite has ever been observed. They can be synthesized but are unstable. All 'Lazurite' specimens are actually sulfate dominant Haüyne. The specious argument to call some powder patterns Lazurite stems from the observation that sulfide is smaller than sulfate and so Haüynes with small unit cells should have more sulfide, but there is never enough to be sulfide dominant.
Reference: Dudley Blauwet (2008)Private Communication Malcolm Back (2009) Private Communication Fernando Camara (2010)Private Communication Fernando Camera (2013) Private Communication
'Lazurite'
Formula: Na6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
Colour: ultramarine
Fluorescence: orange brown in Long Wave UV
Description: Known only as a coating on plagioclase which has replaced Hauyne
Reference: RWMW collection
Marialite
Formula: Na4Al3Si9O24Cl
Habit: Short tetragonal prisms with pyramidal faces and pinacoid.
Colour: colourless
Fluorescence: pale orangey yellow
Description: The Koksha Valley Scapolites are all turning out to be marialite.The PXRD is attached to this specimens photo.
Reference: Moore, T.P.,Woodside, R.M.W. (2014): The Sar-e-Sang Lapis Mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. Mineralogical Record 45 (3), 280-336.
Pargasite
Formula: {Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Habit: Terminated prisms to several cm
Colour: Brown
Fluorescence: none
Description: Frank Hawthorne identified this pargasite. Green "colour change lazurites" (green Hauyne) being replaced by zeolite occur with large pargasite xls. Thus the pargasite has been assigned to this locality.
Reference: Moore, T.P.,Woodside, R.M.W. (2014): The Sar-e-Sang Lapis Mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. Mineralogical Record 45 (3), 280-336.
Phlogopite
Formula: KMg3(AlSi3O10)(OH)2
Habit: hexagonal plates
Description: A gangue mineral
Reference: ; RWMW Collection
Pyrite
Formula: FeS2
Reference: RWMW Collection
'Scapolite'
Description: All "scapolite" samples from Sar-e-Sang analyzed turned out to be marialite
Reference: José Zendrera collection
Thomsonite-Ca
Formula: NaCa2[Al5Si5O20] · 6H2O
Habit: alteration product
Colour: white
Description: Apparently the alteration that produces green Hauynes has continued with the gonnardite to produce mixtures of Gonnardite and Thompsonite. This Thompsonite is only known from the PXRD of Gonnardite with green Hauyne
Reference: RWMW Collection
Titanite
Formula: CaTi(SiO4)O
Habit: Thin prisms
Colour: yellow
Fluorescence: red brown under SW
Description: Raman confirmed
Reference: Moore, T.P.,Woodside, R.M.W. (2014): The Sar-e-Sang Lapis Mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. Mineralogical Record 45 (3), 280-336.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Gypsum'7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
'Afghanite'9.FB.05(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
'Albite'9.FA.35Na(AlSi3O8)
var: Low Albite9.FA.35Na(AlSi3O8)
'Gonnardite'9.GA.05(Na,Ca)2(Si,Al)5O10 · 3H2O
'Haüyne'9.FB.10(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
'Lazurite'9.FB.10Na6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
Marialite9.FB.15Na4Al3Si9O24Cl
Pargasite9.DE.15{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Thomsonite-Ca9.GA.10NaCa2[Al5Si5O20] · 6H2O
Titanite9.AG.15CaTi(SiO4)O
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series' ?-
Scapolite-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Pargasite66.1.3a.12{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Phlogopite71.2.2b.1KMg3(AlSi3O10)(OH)2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Albite76.1.3.1Na(AlSi3O8)
Al-Si Framework Feldspathoids and related species
Afghanite76.2.5.1(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Haüyne76.2.3.3(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
'Lazurite'76.2.3.4Na6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
Al-Si Framework with other Be/Al/Si frameworks
Marialite76.3.1.1Na4Al3Si9O24Cl
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Gonnardite77.1.5.7(Na,Ca)2(Si,Al)5O10 · 3H2O
Unclassified Minerals, Rocks, etc.
Albite
var: Low Albite
-Na(AlSi3O8)
'Albite-Anorthite Series' ?-
'Scapolite'-
Thomsonite-Ca-NaCa2[Al5Si5O20] · 6H2O

List of minerals for each chemical element

HHydrogen
H Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2O
H GypsumCaSO4 · 2H2O
H LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
H Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
H PhlogopiteKMg3(AlSi3O10)(OH)2
H Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
CCarbon
C CalciteCaCO3
OOxygen
O Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
O AlbiteNa(AlSi3O8)
O CalciteCaCO3
O Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2O
O GypsumCaSO4 · 2H2O
O Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
O LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
O Albite (var: Low Albite)Na(AlSi3O8)
O MarialiteNa4Al3Si9O24Cl
O Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
O PhlogopiteKMg3(AlSi3O10)(OH)2
O Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
O TitaniteCaTi(SiO4)O
NaSodium
Na Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Na AlbiteNa(AlSi3O8)
Na Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2O
Na Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
Na LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
Na Albite (var: Low Albite)Na(AlSi3O8)
Na MarialiteNa4Al3Si9O24Cl
Na Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Na Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
MgMagnesium
Mg Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Mg PhlogopiteKMg3(AlSi3O10)(OH)2
AlAluminium
Al Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Al AlbiteNa(AlSi3O8)
Al Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2O
Al Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
Al LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
Al Albite (var: Low Albite)Na(AlSi3O8)
Al MarialiteNa4Al3Si9O24Cl
Al Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Al PhlogopiteKMg3(AlSi3O10)(OH)2
Al Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
SiSilicon
Si Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Si AlbiteNa(AlSi3O8)
Si Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2O
Si Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
Si LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
Si Albite (var: Low Albite)Na(AlSi3O8)
Si MarialiteNa4Al3Si9O24Cl
Si Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Si PhlogopiteKMg3(AlSi3O10)(OH)2
Si Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Si TitaniteCaTi(SiO4)O
SSulfur
S Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
S GypsumCaSO4 · 2H2O
S Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
S LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
S PyriteFeS2
ClChlorine
Cl Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Cl Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
Cl LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
Cl MarialiteNa4Al3Si9O24Cl
KPotassium
K Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
K PhlogopiteKMg3(AlSi3O10)(OH)2
CaCalcium
Ca Afghanite(Na,K)22Ca10(Si24Al24O96)(SO4)6Cl6
Ca CalciteCaCO3
Ca Gonnardite(Na,Ca)2(Si,Al)5O10 · 3H2O
Ca GypsumCaSO4 · 2H2O
Ca Haüyne(Na,K)3(Ca,Na)(Al3Si3O12)(SO4,S,Cl)
Ca LazuriteNa6Ca2(Al6Si6O24)(SO4,S,S2, S3,Cl,OH)2
Ca Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Ca Thomsonite-CaNaCa2[Al5Si5O20] · 6H2O
Ca TitaniteCaTi(SiO4)O
TiTitanium
Ti TitaniteCaTi(SiO4)O
FeIron
Fe PyriteFeS2

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Moore, T.P.,Woodside, R.M.W. (2014): The Sar-e-Sang Lapis Mines, Kuran Wa Munjan district, Badakhshan Province, Afghanistan. Mineralogical Record 45 (3), 280-336.


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