Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Alchuri (Alchori; Aschudi), Shigar District, Gilgit-Baltistan, Pakistan

Oldest recorded age at locality: 55
Youngest recorded age at locality: 4.5

mindat Locality ID: 2528
mindat URL: http://www.mindat.org/loc-2528.html

Tectonic Settings:

Total number of sublocalities beneath "Alchuri (Alchori; Aschudi), Shigar District, Gilgit-Baltistan, Pakistan": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Alchuri Alpine Cleft Locality
Alchuri Pegmatite Localities
Churka Nala

Latitude: 35°33'36"N
Longitude: 75°38'49"E
Decimal Degree (lat, lon): 35.56,75.646944444444
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al B Ba Be C Ca F Fe H K Mg Na O P S Si Ti Zr 

Elements from minerals reported directly at this locality: Al Be C Ca Fe H K Mg O Si Zr 

Structural Groups for minerals in this locality: 
AmphiboleApatiteAragoniteAxiniteBaryteBerylCalciteClinozoisiteCorundumEpidote
FeldsparGypsumNatroliteNonePrehnitePyroxeneQuartzRutileTitaniteTourmaline
VesuvianiteZircon

28 IMA Minerals at location:
Actinolite  (*)Albite  (*)Aragonite  (*)Axinite-(Fe)  (*)Baryte  (*)
Bavenite  (*)Beryl  (*)Calcite  (*)Clinozoisite  (*)Diopside  (*)
Dolomite  (*)Epidote  (*)Fluorapatite  (*)Gypsum  (*)Hematite  (*)
Microcline  (*)Natrolite  (*)Orthoclase  (*)Prehnite  (*)Quartz  (*)
Rutile  (*)Schorl  (*)Siderite  (*)Titanite  (*)Tremolite  (*)
Vesuvianite  (*)Zircon  (*)Zoisite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2554.51953983419
Albite  (*)FeldsparNa(AlSi3O8)554.5295398,953998803
Aragonite  (*)AragoniteCa(CO3)554.503250
Axinite-(Fe)  (*)AxiniteCa4Fe2+2Al4[B2Si8O30](OH)2554.5195398260
Baryte  (*)BaryteBa(SO4)554.519539811547
Bavenite  (*)NoneCa4Be2+xAl2-xSi9O26-x(OH)2+x (x = 0 to 1)554.50255
Beryl  (*)BerylBe3Al2Si6O18554.51953994286
Calcite  (*)CalciteCa(CO3)554.519539827770
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)554.51953981025
Diopside  (*)PyroxeneCaMgSi2O6554.51953984135
Dolomite  (*)NoneCaMg(CO3)2554.509895
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)554.51953988173
Fluorapatite  (*)ApatiteCa5(PO4)3F554.51953992740
Gypsum  (*)GypsumCa(SO4)·2H2O554.51953986890
Hematite  (*)CorundumFe2O3554.5014640
Microcline  (*)FeldsparK(AlSi3O8)554.51953994924
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O554.51953981236
Orthoclase  (*)FeldsparK(AlSi3O8)554.502349
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)2554.501898
Quartz  (*)QuartzSiO2554.5395398,95399,9540061156
Rutile  (*)RutileTiO2554.51953985614
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)554.51953992705
Siderite  (*)CalciteFe(CO3)554.51953986417
Titanite  (*)TitaniteCaTi(SiO4)O554.51953984899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2554.51953982562
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10554.51953981395
Zircon  (*)ZirconZr(SiO4)554.505251
Zoisite  (*)EpidoteCa2Al3[Si2O7][SiO4]O(OH)554.51953981025


Locality Notes from all Ages at Locality:
Age IDLocality Notes
AJG8_9877_001The Dassu orthogneiss hosts many pegmatites, Gilgit is the location of several of these pegmatites
AJG8_9877_002The Dassu orthogneiss hosts many pegmatites, Gilgit is the location of several of these pegmatites
AJG8_9877_003Shigar Valley pegmatites


3 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
AJG8_9877_0017.46.87.1±0.3     Yes  2530Gilgit, Gilgit District, Gilgit-Baltistan, PakistanDassu orthogneissAgheem et al. (2015)10.1007/s12517-015-1900-xAJG8_9877The age of the pegmatites is younger than the Dassu orthogneiss which hosts them, there is no metamorphic overprint on the pegmatites
AJG8_9877_0024.94.54.7±0.2     Yes  2530Gilgit, Gilgit District, Gilgit-Baltistan, PakistanDassu orthogneissAgheem et al. (2015)10.1007/s12517-015-1900-xAJG8_9877The age of the pegmatites is younger than the Dassu orthogneiss which hosts them, there is no metamorphic overprint on the pegmatites
AJG8_9877_003555055-50 age of collision   Yes  2530Gilgit, Gilgit District, Gilgit-Baltistan, PakistanShigar Valley pegmatitesAgheem et al. (2015)10.1007/s12517-015-1900-xAJG8_9877Trace elements variations place the Shigar Valley pegmatites into syn-collision granite domain. This collision-related magmatism took place when Indian plate collided with the Eurasian plate ~55 to 50 Ma ago (e.g., Molnar and Tapponnier 1975; Petterson and Windley 1985; Beck et al. 1995; Rowley 1996; Bignold and Treloar 2003; Rehman et al. 2011)

SampleSource LocalityReference URL
R110128Alchuri (Alchori; Aschudi), Shigar District, Gilgit-Baltistan, Pakistanhttps://rruff.info/R110128
R110127Alchuri (Alchori; Aschudi), Shigar District, Gilgit-Baltistan, Pakistanhttps://rruff.info/R110127
R060935Alchuri (Alchori; Aschudi), Shigar District, Gilgit-Baltistan, Pakistanhttps://rruff.info/R060935

All locality data graciously provided by mindat.org

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