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:
Bullard Mine, Bullard Mine Group (Mohawk Mine; Columbia Mine; Columbus Group), Cunningham Pass District, Harcuvar Mts, La Paz Co., Arizona, USA

Oldest recorded age at locality: 73.2
Youngest recorded age at locality: 24.79

mindat Locality ID: 44907
mindat URL: http://www.mindat.org/loc-44907.html

Tectonic Settings:

Total number of sublocalities beneath "Bullard Mine, Bullard Mine Group (Mohawk Mine; Columbia Mine; Columbus Group), Cunningham Pass District, Harcuvar Mts, La Paz Co., Arizona, USA": 0
Total number of bottom-level sublocalities: 0

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.

Brochantite	None

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: Cu H O S

Elements from minerals reported directly at this locality: Cu H O S

Structural Groups for minerals in this locality:
Brochantite None

2 IMA Minerals at location:

Brochantite ()*	Djurleite ()*

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
Brochantite ()*	Brochantite	Cu₄(SO₄)(OH)₆	73.2	24.79	0		1633
Djurleite ()*	None	Cu₃₁S₁₆	73.2	24.79	0		300

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Num	Age from other Locality	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
Giersdorf_00000353	73.2	67.4	70.3±2.9	K-Ar	Age records metamorphic event which predates mylonitization	S JR-HV 78-1	Yes	33613	Harcuvar Mts, La Paz Co., Arizona, USA	Harcuvar Mts.	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000373	52.1	49.9	51±1.1	K-Ar		UAKA-77-65	Yes	33613	Harcuvar Mts, La Paz Co., Arizona, USA	Harcuvar Mts.	Shafiqullah et al. (1980)	AGSD12_201
Giersdorf_00000392	25.87	24.79	25.33±0.54	K-Ar		UAKA-75-107	Yes	33425	Cunningham Pass District, Harcuvar Mts, La Paz Co., Arizona, USA	Cunningham Pass	Shafiqullah et al. (1980)	AGSD12_201

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...