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:
Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA

Oldest recorded age at locality: 178
Youngest recorded age at locality: 166.4

mindat Locality ID: 187385
mindat URL: http://www.mindat.org/loc-187385.html

Tectonic Settings:

Total number of sublocalities beneath "Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Hermosa Mine
Librada Mine
Salvador Mine (Salvadore Mine; San Salvador Mine)

Latitude: 31°27'16"N
Longitude: 110°42'42"W
Decimal Degree (lat, lon): 31.454444444444,-110.71166666667

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.

Braunite	Clay	Coronadite	Corundum	Descloizite	Kaolinite	Molybdenite	None	Not in a structural group	Pyrite
Quartz	Rocksalt	Rutile	Sphalerite

Braunite ()*	Chlorargyrite ()*	Cryptomelane ()*	Descloizite ()*	Galena ()*
Hematite ()*	Hemimorphite ()*	Kaolinite ()*	Molybdenite ()*	Pyrite ()*
Pyrolusite ()*	Quartz ()*	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: Ag Al Cl Fe H K Mn Mo O Pb S Si V Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Braunite Clay Coronadite Corundum Descloizite Kaolinite Molybdenite None Not in a structural group Pyrite
Quartz Rocksalt Rutile Sphalerite

13 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
Braunite ()*	Braunite	Mn²⁺Mn³⁺₆O₈(SiO₄)	178	166.4	1	146699	483
Chlorargyrite ()*	Rocksalt	AgCl	178	166.4	2	146697,146699	1382
Cryptomelane ()*	Coronadite	K(Mn⁴⁺₇Mn³⁺)O₁₆	178	166.4	1	146699	599
Descloizite ()*	Descloizite	PbZn(VO₄)(OH)	178	166.4	1	146699	378
Galena ()*	Rocksalt	PbS	178	166.4	1	146699	24243
Hematite ()*	Corundum	Fe₂O₃	178	166.4	1	146697	14640
Hemimorphite ()*	Not in a structural group	Zn₄(Si₂O₇)(OH)₂·H₂O	178	166.4	1	146699	1689
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	178	166.4	1	146699	5591
Molybdenite ()*	Molybdenite	MoS₂	178	166.4	1	146697	5800
Pyrite ()*	Pyrite	FeS₂	178	166.4	1	146699	39462
Pyrolusite ()*	Rutile	MnO₂	178	166.4	2	146697,146699	3106
Quartz ()*	Quartz	SiO₂	178	166.4	1	146699	61156
Sphalerite ()*	Sphalerite	ZnS	178	166.4	1	146699	21482

8 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	MinDat Locality ID	Dated Locality (Max Age)	Reference	Reference ID
USGS-Rb-Sr-06648	178	166.4	172.2±5.8	Rb-Sr	age of volcanism	whole rock	187385	Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06649	178	166.4	172.2±5.8	Rb-Sr	age of volcanism	whole rock	187385	Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06650	178	166.4	172.2±5.8	Rb-Sr	age of volcanism	whole rock	187385	Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06651	178	166.4	172.2±5.8	Rb-Sr	age of volcanism	whole rock	187385	Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06652	178	166.4	172.2±5.8	Rb-Sr	age of volcanism	whole rock	187385	Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06653	178	166.4	172.2±5.8	Rb-Sr	age of volcanism	whole rock	187385	Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06654	178	166.4	172.2±5.8	Rb-Sr	age of volcanism	whole rock	187385	Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA	USGS-Rb-Sr	USGS-Rb-Sr
USGS-Rb-Sr-06655	178	166.4	172.2±5.8	Rb-Sr	age of volcanism	whole rock	187385	Hermosa Group, Hardshell Gulch, Harshaw, Harshaw District, Patagonia Mts, Santa Cruz Co., Arizona, USA	USGS-Rb-Sr	USGS-Rb-Sr

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...