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

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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 Alpine Cleft Locality, Alchuri (Alchori; Aschudi), Shigar District, Gilgit-Baltistan, Pakistan

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

mindat Locality ID: 231789
mindat URL: http://www.mindat.org/loc-231789.html

Tectonic Settings:

Total number of sublocalities beneath "Alchuri Alpine Cleft Locality, Alchuri (Alchori; Aschudi), Shigar District, Gilgit-Baltistan, Pakistan": 0
Total number of bottom-level sublocalities: 0

Latitude: 35°33'37"N
Longitude: 75°38'49"E
Decimal Degree (lat, lon): 35.560277777778,75.646944444444
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 C Ca F Fe H Mg Na O S Si Ti 

Elements from minerals reported directly at this locality: Al B Ba C Ca F Fe H Mg Na O S Si Ti 

Structural Groups for minerals in this locality: 
AmphiboleAxiniteBaryteCalciteClinozoisiteEpidoteFeldsparGypsumNatroliteNone
PyroxeneQuartzRutileTitaniteVesuvianite

17 IMA Minerals at location:
Actinolite  (*)Albite  (*)Axinite-(Fe)  (*)Baryte  (*)Calcite  (*)
Clinozoisite  (*)Diopside  (*)Epidote  (*)Gypsum  (*)Natrolite  (*)
Quartz  (*)Rutile  (*)Siderite  (*)Titanite  (*)Tremolite  (*)
Vesuvianite  (*)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)2554.503419
Albite  (*)FeldsparNa(AlSi3O8)554.508803
Axinite-(Fe)  (*)AxiniteCa4Fe2+2Al4[B2Si8O30](OH)2554.50260
Baryte  (*)BaryteBa(SO4)554.5011547
Calcite  (*)CalciteCa(CO3)554.5027770
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)554.501025
Diopside  (*)PyroxeneCaMgSi2O6554.504135
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)554.508173
Gypsum  (*)GypsumCa(SO4)·2H2O554.506890
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O554.501236
Quartz  (*)QuartzSiO2554.5061156
Rutile  (*)RutileTiO2554.505614
Siderite  (*)CalciteFe(CO3)554.506417
Titanite  (*)TitaniteCaTi(SiO4)O554.504899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)2554.502562
Vesuvianite  (*)Vesuvianite(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10554.501395
Zoisite  (*)EpidoteCa2Al3[Si2O7][SiO4]O(OH)554.501025


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

All locality data graciously provided by mindat.org

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