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:
Big Johnnie Gulch, Copper Hill, Globe Hills, Globe Hills District, Globe-Miami District, Gila Co., Arizona, USA

Oldest recorded age at locality: 57.2
Youngest recorded age at locality: 54.4

mindat Locality ID: 274692
mindat URL: http://www.mindat.org/loc-274692.html

Tectonic Settings:

Total number of sublocalities beneath "Big Johnnie Gulch, Copper Hill, Globe Hills, Globe Hills District, Globe-Miami District, Gila Co., Arizona, USA": 1
Total number of bottom-level sublocalities: 1

Number of Child Localities: 1
Child Localities:
Mineral Farm Mine (Mineral Farms Group; Mineral Farm Group; Moonlight & Mineral Farm Group; Eagle Pass Group Of Claims; Moonlight; Bennett)

Latitude: 33°26'46"N
Longitude: 110°46'11"W
Decimal Degree (lat, lon): 33.446111111111,-110.76972222222

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	Calcite	Chalcopyrite	Corundum	Covellite	Malachite	None	Quartz	Rocksalt	Rutile
Sphalerite

Ankerite ()*	Bornite ()*	Chalcocite ()*	Chalcopyrite ()*	Chrysocolla ()*
Covellite ()*	Galena ()*	Hematite ()*	Malachite ()*	Manganite ()*
Pyrolusite ()*	Quartz ()*	Rhodochrosite ()*	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 C Ca Cu Fe H Mn O Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Calcite Chalcopyrite Corundum Covellite Malachite None Quartz Rocksalt Rutile
Sphalerite

14 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
Ankerite ()*	None	Ca(Fe²⁺,Mg)(CO₃)₂	57.2	54.4	1	138280	3092
Bornite ()*	None	Cu₅FeS₄	57.2	54.4	1	138280	5516
Chalcocite ()*	None	Cu₂S	57.2	54.4	1	138280	5707
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	57.2	54.4	1	138280	27198
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O	57.2	54.4	1	138280	3531
Covellite ()*	Covellite	CuS	57.2	54.4	1	138280	4165
Galena ()*	Rocksalt	PbS	57.2	54.4	1	138280	24243
Hematite ()*	Corundum	Fe₂O₃	57.2	54.4	1	138280	14640
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	57.2	54.4	1	138280	12537
Manganite ()*	Rutile	Mn³⁺O(OH)	57.2	54.4	1	138280	770
Pyrolusite ()*	Rutile	MnO₂	57.2	54.4	1	138280	3106
Quartz ()*	Quartz	SiO₂	57.2	54.4	1	138280	61156
Rhodochrosite ()*	Calcite	Mn(CO₃)	57.2	54.4	1	138280	1711
Sphalerite ()*	Sphalerite	ZnS	57.2	54.4	1	138280	21482

1 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
	Giersdorf_00000367	57.2	54.4	55.8±1.4	K-Ar				UAKA-69-10		Yes				24945	Globe-Miami District, Gila Co., Arizona, USA	Globe Quad.	Shafiqullah et al. (1980)		AGSD12_201

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...