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:
Laochang Ore Field (Laochang Mine), Gejiu Sn-polymetallic Ore Field, Gejiu Co., Honghe, Yunnan, China

Oldest recorded age at locality: 145
Youngest recorded age at locality: 66

mindat Locality ID: 155491
mindat URL: http://www.mindat.org/loc-155491.html

Tectonic Settings:

Total number of sublocalities beneath "Laochang Ore Field (Laochang Mine), Gejiu Sn-polymetallic Ore Field, Gejiu Co., Honghe, Yunnan, China": 2
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Tangziwa Deposit
Zhuyeshan Deposit

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.

Allophane	Arsenopyrite	Beryl	Calcite	Chalcopyrite	Clay	Fluorite	Mica	Nickeline	None
Not in a structural group	Philipsburgite	Pyrite	Pyroxene	Quartz	Rocksalt	Rutile	Scheelite	Veszelyite

Allophane ()*	Arsenopyrite ()*	Beryl ()*	Cassiterite ()*	Chalcopyrite ()*
Diopside ()*	Dolomite ()*	Fluorite ()*	Galena ()*	Hemimorphite ()*
Kipushite ()*	Muscovite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*
Scheelite ()*	Siderite ()*	Veszelyite ()*

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 Be C Ca Cu F Fe H K Mg O P Pb S Si Sn W Zn

Elements from minerals reported directly at this locality: Al As Be C Ca Cu F Fe H K O P Pb S Si W Zn

Structural Groups for minerals in this locality:
Allophane Arsenopyrite Beryl Calcite Chalcopyrite Clay Fluorite Mica Nickeline None
Not in a structural group Philipsburgite Pyrite Pyroxene Quartz Rocksalt Rutile Scheelite Veszelyite

18 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
Allophane ()*	Allophane	Al₂O₃(SiO₂)_1.3-2.0·2.5-3.0H₂O	145	66	0		470
Arsenopyrite ()*	Arsenopyrite	FeAsS	145	66	0		9052
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	145	66	0		4286
Cassiterite ()*	Rutile	SnO₂	83.4	83.4	1	44940	5171
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	145	66	0		27198
Diopside ()*	Pyroxene	CaMgSi₂O₆	145	66	1	44940	4135
Dolomite ()*	None	CaMg(CO₃)₂	145	66	1	44940	9895
Fluorite ()*	Fluorite	CaF₂	145	66	0		9617
Galena ()*	Rocksalt	PbS	145	66	0		24243
Hemimorphite ()*	Not in a structural group	Zn₄(Si₂O₇)(OH)₂·H₂O	145	66	0		1689
Kipushite ()*	Philipsburgite	Cu₆(PO₄)₂(OH)₆·H₂O	83.4	83.4	0		8
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	145	66	0		17380
Pyrite ()*	Pyrite	FeS₂	145	66	0		39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	145	66	0		9056
Quartz ()*	Quartz	SiO₂	145	66	0		61156
Scheelite ()*	Scheelite	Ca(WO₄)	145	66	0		4894
Siderite ()*	Calcite	Fe(CO₃)	145	66	0		6417
Veszelyite ()*	Veszelyite	(Cu,Zn)₂Zn(PO₄)(OH)₃·2H₂O	83.4	83.4	0		20

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
	Kristen002010	83.4	83.4	83.4		mineralization age					Yes			Sn, Cu	31920	Gejiu Sn-polymetallic Ore Field, Gejiu Co., Honghe, Yunnan, China	Gejiu	Jingwen et al. (2013)	10.1007/s00126-012-0446-z	MD48_267
	Chen2007tbl01-02	145	66	Cretaceous?							Yes		Arsenopyrite, Chalcopyrite, Galena, Gold, Magnetite, Molybdenite, Pyrite, Sphalerite, Electrum		186995	Jixinnao Au-Cu Deposit, Kafang Ore Field (Kafang Mine), Gejiu Sn-polymetallic Ore Field, Gejiu Co., Honghe, Yunnan, China	Jixinnao, Gejiu, Yunnan	Chen et al. (2007)	10.1016/j.oregeorev.2005.01.001	OGR31_139

Sample	Source Locality	Reference URL
R160003	Laochang Ore Field (Laochang Mine), Gejiu Sn-polymetallic Ore Field, Gejiu Co., Honghe, Yunnan, China	https://rruff.info/R160003

All locality data graciously provided by mindat.org

All age data...