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:
Twin Peaks Area, Barkol Co. (Barköl Co.; Balikun Co.), Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China

Oldest recorded age at locality: 270
Youngest recorded age at locality: 182

mindat Locality ID: 189121
mindat URL: http://www.mindat.org/loc-189121.html

Tectonic Settings:

Total number of sublocalities beneath "Twin Peaks Area, Barkol Co. (Barköl Co.; Balikun Co.), Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Shuangfengshan Au Deposit (Twin Peaks Au Deposit)
Shuangfengshan II Hg-Au Deposit (Occurrence No. 1583)

Latitude: 0°0'0"N
Longitude: 0°0'0"E
Decimal Degree (lat, lon): 0,0

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The 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.

Alunite	Arsenopyrite	Baryte	Calcite	Chalcopyrite	Clay	Clinozoisite	Copper	Corundum	Epidote
Feldspar	Fluorite	Kaolinite	Mica	None	Pyrite	Pyrophyllite	Pyroxene	Quartz	Rocksalt
Smectite-vermiculite	Sphalerite

Albite ()*	Alunite ()*	Arsenopyrite ()*	Augite ()*	Baryte ()*
Calcite ()*	Celadonite ()*	Chalcopyrite ()*	Cinnabar ()*	Epidote ()*
Fluorite ()*	Galena ()*	Gold ()*	Hematite ()*	Jarosite ()*
Kaolinite ()*	Montmorillonite ()*	Muscovite ()*	Pyrite ()*	Pyrophyllite ()*
Quartz ()*	Sphalerite ()*

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 As Au Ba C Ca Cu F Fe H Hg K Mg Na O Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Alunite Arsenopyrite Baryte Calcite Chalcopyrite Clay Clinozoisite Copper Corundum Epidote
Feldspar Fluorite Kaolinite Mica None Pyrite Pyrophyllite Pyroxene Quartz Rocksalt
Smectite-vermiculite Sphalerite

22 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	270	182	1	44228	8803
Alunite ()*	None	KAl₃(SO₄)₂(OH)₆	270	182	1	44228	966
Arsenopyrite ()*	Arsenopyrite	FeAsS	270	182	1	44228	9052
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	270	182	1	44228	2060
Baryte ()*	Baryte	Ba(SO₄)	270	182	1	44228	11547
Calcite ()*	Calcite	Ca(CO₃)	270	182	2	44228,44229	27770
Celadonite ()*	Mica Clay	KMgFe³⁺Si₄O₁₀(OH)₂	270	182	1	44228	309
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	270	182	1	44228	27198
Cinnabar ()*	None	HgS	270	182	1	44229	2600
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	270	182	1	44228	8173
Fluorite ()*	Fluorite	CaF₂	270	182	1	44228	9617
Galena ()*	Rocksalt	PbS	270	182	1	44228	24243
Gold ()*	Copper	Au	270	182	2	44228,44229	30554
Hematite ()*	Corundum	Fe₂O₃	270	182	1	44228	14640
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	270	182	1	44228	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	270	182	2	44228,44229	5591
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	270	182	1	44228	1508
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	270	182	1	44228	17380
Pyrite ()*	Pyrite	FeS₂	270	182	2	44228,44229	39462
Pyrophyllite ()*	Clay Pyrophyllite	Al₂Si₄O₁₀(OH)₂	270	182	1	44229	771
Quartz ()*	Quartz	SiO₂	270	182	2	44228,44229	61156
Sphalerite ()*	Sphalerite	ZnS	270	182	1	44228	21482

2 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Kristen002264	247	205	226±21	Rb-Sr										144062	Shuangfengshan Au Deposit (Twin Peaks Au Deposit), Twin Peaks Area, Barkol Co. (Barköl Co.; Balikun Co.), Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China	Shuangfengshan Au Deposit	Han et al. (2014)	10.1111/rge.12033	RG64_136
	Kristen002265	270	182	226±44	Rb-Sr										144062	Shuangfengshan Au Deposit (Twin Peaks Au Deposit), Twin Peaks Area, Barkol Co. (Barköl Co.; Balikun Co.), Hami Prefecture (Kumul Prefecture; Qumul Prefecture), Xinjiang, China	Shuangfengshan Au Deposit	Han et al. (2014)	10.1111/rge.12033	RG64_136

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...