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:
Telegraph City, Foothill Copper Belt, Calaveras Co., California, USA

Oldest recorded age at locality: 170
Youngest recorded age at locality: 100

mindat Locality ID: 259457
mindat URL: http://www.mindat.org/loc-259457.html

Tectonic Settings:

Total number of sublocalities beneath "Telegraph City, Foothill Copper Belt, Calaveras Co., California, USA": 22
Total number of bottom-level sublocalities: 22

Number of Child Localities: 22
Child Localities:
Callahan Prospect (Callahan Deposit)
Copper Crescent Mine
Donner Prospect (Donner & Callahan)
Echandi Occurrence
Gopher Hill Mine (Gopher Ridge)
Little Quail Hill Mine
Napoleon Mine (Nepolean Mine)
Pioneer Mine
Quail Hill Mine (Eagle Mine; Eagle Copper And Silver Mine)
Rosella Occurrrence
Shirley Queen Prospect
Shumate Mine (McNulty)
South Gulch Placer
Star & Excelsior Mine (Star Mine; Excelsior Mine)
Tecumseh Mine
Telegraph Mine (Diamond J)
Unidentified Au Mine [5]
Unidentified Au Mines [6]
Unknown Cu Occurrence [3]
Unknown Talc-soapstone Occurrence [2]
Unnamed Au Mine [9]
Unnamed Au Prospect [64]

Latitude: 37°56'4"N
Longitude: 120°43'56"W
Decimal Degree (lat, lon): 37.934444444444,-120.73222222222

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	Baryte	Calcite	Chalcanthite	Chalcopyrite	Clay	Copper	Coquimbite	Kaolinite	Malachite
Mica	None	Pyrite	Quartz	Rhodonite	Rocksalt	Sphalerite	Talc

Baryte ()*	Calcite ()*	Chalcanthite ()*	Chalcocite ()*	Chalcopyrite ()*
Chrysocolla ()*	Copper ()*	Coquimbite ()*	Galena ()*	Gold ()*
Kalinite ()*	Kaolinite ()*	Malachite ()*	Muscovite ()*	Pyrite ()*
Quartz ()*	Rhodonite ()*	Silver ()*	Sphalerite ()*	Talc ()*

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 Au Ba C Ca Cu Fe H K Mg Mn O Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Baryte Calcite Chalcanthite Chalcopyrite Clay Copper Coquimbite Kaolinite Malachite
Mica None Pyrite Quartz Rhodonite Rocksalt Sphalerite Talc

20 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
Baryte ()*	Baryte	Ba(SO₄)	170	100	3	152842,152844,152849	11547
Calcite ()*	Calcite	Ca(CO₃)	170	100	2	152842,152844	27770
Chalcanthite ()*	Chalcanthite	Cu(SO₄)·5H₂O	170	170	1	152844	925
Chalcocite ()*	None	Cu₂S	170	100	2	152844,152849	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	170	100	5	152842,152844,152847,152849,152851	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	100	100	1	152849	3531
Copper ()*	Copper	Cu	100	100	1	152842	3846
Coquimbite ()*	Coquimbite	AlFe₃(SO₄)₆(H₂O)₁₂·6H₂O	170	170	1	152844	136
Galena ()*	Rocksalt	PbS	100	100	1	152842	24243
Gold ()*	Copper	Au	100	100	6	152840,152843,152846,152850,152852,152853	30554
Kalinite ()*	None	KAl(SO₄)₂·11H₂O	170	170	1	152844	54
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	170	100	3	152844,152847,152849	5591
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	100	100	1	152849	12537
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	170	170	1	152844	17380
Pyrite ()*	Pyrite	FeS₂	170	100	7	152840,152842,152843,152844,152847,152849,152851	39462
Quartz ()*	Quartz	SiO₂	170	100	10	152839,152840,152842,152843,152844,152846,152849,152850,152852,152853	61156
Rhodonite ()*	Rhodonite	CaMn₃Mn(Si₅O₁₅)	100	100	1	152836	969
Silver ()*	Copper	Ag	170	170	1	152844	5186
Sphalerite ()*	Sphalerite	ZnS	170	100	3	152842,152844,152849	21482
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	100	100	2	152850,152855	3337

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
	Mo-00156	100	100								Yes		Molybdenite	Mo	16293	Calaveras Co., California, USA	Calaveras County	Brock (1972)	10.1130/0016-7606(1972)83[3391:GOGHSC]2.0.CO;2	GSAB83_3391
	vms-01040	170	170	Jurassic										S	75795	Quail Hill Mine (Eagle Mine; Eagle Copper And Silver Mine), Telegraph City, Foothill Copper Belt, Calaveras Co., California, USA	Quail Hill	Moiser et al. (2009)		USGSOFR2009_1034

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...