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:
Contention-Grand Central Mine Group, Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA

Oldest recorded age at locality: 145
Youngest recorded age at locality: 0

mindat Locality ID: 32909
mindat URL: http://www.mindat.org/loc-32909.html

Tectonic Settings:

Total number of sublocalities beneath "Contention-Grand Central Mine Group, Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Contention Mine
Flora Morrison Mine
Grand Central Mine
Head Center Mine (Head Center Claim)
Pump Shaft
Tranquility Mine (Tranquility Shaft)
Yellow Jacket Mine

Latitude: 31°42'18"N
Longitude: 110°3'42"W
Decimal Degree (lat, lon): 31.705,-110.06166666667

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	Alunite	Amorphous	Aragonite	Backite	Copper	Linarite	None	Not in a structural group	Pyrite
Quartz	Raspite	Rocksalt	Scheelite	Schieffelinite

Altaite ()*	Anatase ()*	Backite ()*	Bairdite ()*	Cerussite ()*
Chlorargyrite ()*	Chrysocolla ()*	Emmonsite ()*	Fairbankite ()*	Galena ()*
Gold ()*	Hessite ()*	Jarosite ()*	Linarite ()*	Oboyerite ()*
Opal ()*	Ottoite ()*	Pyrite ()*	Quartz ()*	Raspite ()*
Rodalquilarite ()*	Schieffelinite ()*	Silver ()*	Winstanleyite ()*	Wulfenite ()*

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 C Cl Cu Fe H K Mo O Pb S Si Te Ti W

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Alunite Amorphous Aragonite Backite Copper Linarite None Not in a structural group Pyrite
Quartz Raspite Rocksalt Scheelite Schieffelinite

25 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
Altaite ()*	Rocksalt	PbTe	145	0	1	137407	489
Anatase ()*	Not in a structural group	TiO₂	145	0	1	137407	2162
Backite ()*	Backite	Pb₂AlTeO₆Cl	145	0	1	137407	1
Bairdite ()*	Not in a structural group	Pb₂Cu²⁺₄Te⁶⁺₂O₁₀(OH)₂(SO₄)·H₂O	145	0	1	137407	4
Cerussite ()*	Aragonite	Pb(CO₃)	145	0	1	137407	4979
Chlorargyrite ()*	Rocksalt	AgCl	145	0	2	137405,137407	1382
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	145	0	1	137405	3531
Emmonsite ()*	None	Fe³⁺₂(Te⁴⁺O₃)₃·2H₂O	145	0	1	137407	34
Fairbankite ()*	None	Pb²⁺₁₂(Te⁴⁺O₃)₁₁(SO₄)	145	0	1	137407	1
Galena ()*	Rocksalt	PbS	145	0	3	137405,137407,137410	24243
Gold ()*	Copper	Au	145	0	6	137405,137406,137407,137408,137410,137411	30554
Hessite ()*	None	Ag₂Te	145	0	1	137406	804
Jarosite ()*	Alunite	KFe³⁺₃(SO₄)₂(OH)₆	145	0	1	137407	2228
Linarite ()*	Linarite	CuPb(SO₄)(OH)₂	145	0	1	137410	987
Oboyerite ()*	None	H₆Pb₆(Te⁴⁺O₃)₃(Te⁶⁺O₆)₂·2H₂O	145	0	1	137407	4
Opal ()*	Amorphous	SiO₂·nH₂O	145	0	2	137405,137407	2994
Ottoite ()*	Not in a structural group	Pb₂TeO₅	145	0	1	137407	5
Pyrite ()*	Pyrite	FeS₂	145	0	1	137407	39462
Quartz ()*	Quartz	SiO₂	145	0	2	137406,137407	61156
Raspite ()*	Raspite	Pb(WO₄)	145	0	1	137407	26
Rodalquilarite ()*	None	H₃Fe³⁺₂(Te⁴⁺O₃)₄Cl	145	0	1	137407	6
Schieffelinite ()*	Schieffelinite	Pb₁₀Te⁶⁺₆O₂₀(OH)₁₄(SO₄)(H₂O)₅	145	0	1	137407	4
Silver ()*	Copper	Ag	145	0	2	137406,137407	5186
Winstanleyite ()*	None	TiTe⁴⁺₃O₈	145	0	1	137407	2
Wulfenite ()*	Scheelite	PbMoO₄	76	66	1	137405	1655

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_554	Near-surface occurrence. Recently forming oxalate associated with cave deposits, in Cochise County, Arizona.

7 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	Age from other Locality	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
Michelle_554	0	0	Recent		Age of whewellite mineralization	high			Yes	Whewellite		15570	Cochise Co., Arizona, USA	Cochise County	Hofmann and Bernasconi (1998)	10.1016/S0009-2541(98)00043-6	CG149_127	Described as "recent cave deposits."
EG94_211-00055	76	76		Pb-Pb			whole rock?	T11	Yes			19445	Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA	Tombstone	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211
EG94_211-00056	76	76		Pb-Pb			whole rock?	T21	Yes			19445	Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA	Tombstone	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211
EG94_211-00057	72	72		Pb-Pb			whole rock?	T32	Yes			19445	Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA	Tombstone	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211
EG94_211-00058	66	66	66	Pb-Pb			whole rock?	T44	Yes			19445	Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA	Tombstone	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211
Mo-00180	76	66		U-Th-Pb?, Pb-Pb?					Yes	Molybdofornacite, Wulfenite	Mo	19445	Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA	Tombstone Volcanics	Bouse et al. (1999)	10.2113/gsecongeo.94.2.211	EG94_211	76-66 Ma is the age range of volcanics at Tombstone including Bronco Volcanics (76 Ma), Schieffelin Granodiorite (76 Ma), Rhyodacite stock (72 Ma), and Tombstone Rhyolite (66 Ma).
sedznpb-00497	145	2.6	Cretaceous–Tertiary						Yes			19445	Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA	Tombstone	Singer et al. (2009)		USGSOFR2009-1252

Sample	Source Locality	Reference URL
R130126	Grand Central Mine, Contention-Grand Central Mine Group, Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA	https://rruff.info/R130126
R130514	Grand Central Mine, Contention-Grand Central Mine Group, Tombstone District, Tombstone Hills, Cochise Co., Arizona, USA	https://rruff.info/R130514

All locality data graciously provided by mindat.org

All age data...