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:
Cheng Co., Longnan, Gansu, China

Oldest recorded age at locality: 393
Youngest recorded age at locality: 342

mindat Locality ID: 190882
mindat URL: http://www.mindat.org/loc-190882.html

Tectonic Settings:

Total number of sublocalities beneath "Cheng Co., Longnan, Gansu, China": 6
Total number of bottom-level sublocalities: 6

Number of Child Localities: 6
Child Localities:
Anjiacha Au Deposit
Bijiashan Pb-Zn-Cu Deposit
Changba Pb-Zn-(Ag) Deposit (Changba-Lijiagou Pb-Zn-(Ag) Deposit)
Dengjiashan Pb-Zn Deposit (Dengjianshan Pb-Zn Deposit)
Liuxianghe Au Deposit
Xiaogouli Au Deposit

Latitude: 33°54'51"N
Longitude: 105°32'43"E
Decimal Degree (lat, lon): 33.914166666667,105.54527777778

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	Amphibole	Andalusite	Aragonite	Arsenopyrite	Baryte	Beryl	Bournonite	Calcite	Chalcopyrite
Clay	Clinozoisite	Copper	Epidote	Feldspar	Fluorite	Gypsum	Kaolinite	Malachite	Marcasite
Mica	Molybdenite	Nickeline	None	Not in a structural group	Owyheeite	Polybasite	Pyrite	Pyroxene	Quartz
Rocksalt	Sphalerite	Stibnite	Talc	Tetrahedrite

Actinolite ()*	Albite ()*	Andalusite ()*	Anhydrite ()*	Ankerite ()*
Arsenopyrite ()*	Azurite ()*	Baryte ()*	Bornite ()*	Boulangerite ()*
Bournonite ()*	Calcite ()*	Celestine ()*	Celsian ()*	Cerussite ()*
Chalcopyrite ()*	Cinnabar ()*	Cordierite ()*	Cymrite ()*	Diopside ()*
Dolomite ()*	Epidote ()*	Fluorite ()*	Freibergite ()*	Galena ()*
Gold ()*	Gypsum ()*	Hemimorphite ()*	Jarosite ()*	Kaolinite ()*
Malachite ()*	Marcasite ()*	Molybdenite ()*	Muscovite ()*	Owyheeite ()*
Gersdorffite-Pa3 ()*	Polybasite ()*	Pyrargyrite ()*	Pyrite ()*	Pyrrhotite ()*
Quartz ()*	Siderite ()*	Silver ()*	Smithsonite ()*	Sphalerite ()*
Stibnite ()*	Talc ()*	Tennantite-(Fe) ()*	Tetrahedrite-(Zn) ()*	Tremolite ()*

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: Ag Al As Au Ba C Ca Cu F Fe H Hg K Mg Mo Na Ni O Pb S Sb Si Sr Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Alunite Amphibole Andalusite Aragonite Arsenopyrite Baryte Beryl Bournonite Calcite Chalcopyrite
Clay Clinozoisite Copper Epidote Feldspar Fluorite Gypsum Kaolinite Malachite Marcasite
Mica Molybdenite Nickeline None Not in a structural group Owyheeite Polybasite Pyrite Pyroxene Quartz
Rocksalt Sphalerite Stibnite Talc Tetrahedrite

50 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
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	393	346	1	37688	3419
Albite ()*	Feldspar	Na(AlSi₃O₈)	393	342	3	37688,37689,37691	8803
Andalusite ()*	Andalusite	Al₂SiO₅			1	37691	1310
Anhydrite ()*	Not in a structural group	Ca(SO₄)	393	346	1	37688	1588
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	393	342	3	37687,37689,37691	3092
Arsenopyrite ()*	Arsenopyrite	FeAsS	393	342	5	37686,37687,37688,37689,37691	9052
Azurite ()*	Not in a structural group	Cu₃(CO₃)₂(OH)₂			1	37691	5509
Baryte ()*	Baryte	Ba(SO₄)	393	342	3	37687,37688,37689	11547
Bornite ()*	None	Cu₅FeS₄	393	342	1	37687	5516
Boulangerite ()*	None	Pb₅Sb₄S₁₁	393	342	2	37688,37689	843
Bournonite ()*	Bournonite	CuPbSbS₃	393	346	1	37688	1089
Calcite ()*	Calcite	Ca(CO₃)	393	342	4	37687,37688,37689,37691	27770
Celestine ()*	Baryte	Sr(SO₄)	393	346	1	37688	1252
Celsian ()*	Feldspar	Ba(Al₂Si₂O₈)	393	342	1	37689	100
Cerussite ()*	Aragonite	Pb(CO₃)	393	346	1	37688	4979
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	393	342	4	37687,37688,37689,37691	27198
Cinnabar ()*	None	HgS	393	342	1	37689	2600
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈			1	37691	1008
Cymrite ()*	None	Ba(Si,Al)₄(O,OH)₈·H₂O	393	342	1	37689	46
Diopside ()*	Pyroxene	CaMgSi₂O₆	393	346	1	37688	4135
Dolomite ()*	None	CaMg(CO₃)₂	393	342	3	37687,37688,37689	9895
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	393	346	1	37688	8173
Fluorite ()*	Fluorite	CaF₂	393	342	2	37687,37688	9617
Freibergite ()*	Tetrahedrite	Ag₆[Cu₄Fe₂]Sb₄S₁₂	393	342	3	37687,37689,37691	663
Galena ()*	Rocksalt	PbS	393	342	4	37687,37688,37689,37691	24243
Gold ()*	Copper	Au	393	342	4	37686,37689,37690,37691	30554
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	393	346	1	37688	6890
Hemimorphite ()*	Not in a structural group	Zn₄(Si₂O₇)(OH)₂·H₂O	393	346	1	37688	1689
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	393	346	1	37688	2228
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			1	37691	5591
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			1	37691	12537
Marcasite ()*	Marcasite	FeS₂	393	342	3	37687,37688,37689	5674
Molybdenite ()*	Molybdenite	MoS₂			1	37691	5800
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	393	342	5	37686,37687,37688,37689,37691	17380
Owyheeite ()*	Owyheeite	Ag₃Pb₁₀Sb₁₁S₂₈	393	342	1	37689	89
Gersdorffite-Pa3 ()*	Pyrite	NiAsS	393	342	1	37689	767
Polybasite ()*	Polybasite	[Ag₉CuS₄][(Ag,Cu)₆(Sb,As)₂S₇]	393	342	1	37689	716
Pyrargyrite ()*	None	Ag₃SbS₃	393	342	1	37689	1425
Pyrite ()*	Pyrite	FeS₂	393	342	5	37686,37687,37688,37689,37691	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	393	342	4	37687,37688,37689,37691	9056
Quartz ()*	Quartz	SiO₂	393	342	5	37686,37687,37688,37689,37691	61156
Siderite ()*	Calcite	Fe(CO₃)	393	342	1	37687	6417
Silver ()*	Copper	Ag	393	342	1	37689	5186
Smithsonite ()*	Calcite	Zn(CO₃)	393	346	1	37688	2473
Sphalerite ()*	Sphalerite	ZnS	393	342	4	37687,37688,37689,37691	21482
Stibnite ()*	Stibnite	Sb₂S₃	393	342	2	37687,37689	3418
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂			1	37691	3337
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃	393	346	1	37688	1803
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	393	342	2	37687,37689	5317
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	393	346	1	37688	2562

6 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age Interpret	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
sedexmvt-00088	393	383	Middle Devonian	host rock age	190883	Bijiashan Pb-Zn-Cu Deposit, Cheng Co., Longnan, Gansu, China	Bijiashan	Taylor et al. (2009)	USGSOFR2009_1297
sedznpb-00150	374	342	342–374		190883	Bijiashan Pb-Zn-Cu Deposit, Cheng Co., Longnan, Gansu, China	Bijiashan	Singer et al. (2009)	USGSOFR2009-1252
sedexmvt-00089	393	383	Middle Devonian	host rock age	144740	Changba Pb-Zn-(Ag) Deposit (Changba-Lijiagou Pb-Zn-(Ag) Deposit), Cheng Co., Longnan, Gansu, China	Changba-Lijiagou	Taylor et al. (2009)	USGSOFR2009_1297
sedznpb-00151	389	346	346–389		144740	Changba Pb-Zn-(Ag) Deposit (Changba-Lijiagou Pb-Zn-(Ag) Deposit), Cheng Co., Longnan, Gansu, China	Changba/Lijiagou	Singer et al. (2009)	USGSOFR2009-1252
sedexmvt-00091	393	383	Middle Devonian	host rock age	144985	Dengjiashan Pb-Zn Deposit (Dengjianshan Pb-Zn Deposit), Cheng Co., Longnan, Gansu, China	Dengjiashan	Taylor et al. (2009)	USGSOFR2009_1297
sedznpb-00154	374	342	374–342		144985	Dengjiashan Pb-Zn Deposit (Dengjianshan Pb-Zn Deposit), Cheng Co., Longnan, Gansu, China	Dengjiashan	Singer et al. (2009)	USGSOFR2009-1252

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...