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:
Descanso, Laguna Mts, San Diego Co., California, USA

Oldest recorded age at locality: 167
Youngest recorded age at locality: 105.3

mindat Locality ID: 28450
mindat URL: http://www.mindat.org/loc-28450.html

Tectonic Settings:

Total number of sublocalities beneath "Descanso, Laguna Mts, San Diego Co., California, USA": 10
Total number of bottom-level sublocalities: 10

Number of Child Localities: 10
Child Localities:
Allen Borrow Pit
Decker Prospect
Descanso Mine (Magdalena Mine; Descanso Mining Company; Ellis Mine)
Happy Jack Mine
Iron Mask Prospect
Lucky Strike Group (Dam Fino Prospect; Long-Time-No-See Prospect; Pocket Prospect; Lucky Strike Prospect)
Spanish Bayonet Deposit
Unnamed W Occurrence
Unspecified Local Mines
War Eagle Prospect

Latitude: 32°53'24"N
Longitude: 116°36'42"W
Decimal Degree (lat, lon): 32.89,-116.61166666667

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.

Copper	Marcasite	Nickeline	None	Rocksalt	Scheelite

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: Au Ca Fe O Pb S W

Elements from minerals reported directly at this locality: Au

Structural Groups for minerals in this locality:
Copper Marcasite Nickeline None Rocksalt Scheelite

5 IMA Minerals at location:

Galena ()*	Gold ()*	Marcasite ()*	Pyrrhotite ()*	Scheelite ()*

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
Galena ()*	Rocksalt	PbS			1	174667	24243
Gold ()*	Copper	Au	167	105.3	0		30554
Marcasite ()*	Marcasite	FeS₂			1	174673	5674
Pyrrhotite ()*	Nickeline	Fe₇S₈			1	174673	9056
Scheelite ()*	Scheelite	Ca(WO₄)			1	174672	4894

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
	NAVDAT-126265	128.7	105.3	117±11.7					126265						91115	Allen Borrow Pit, Descanso, Laguna Mts, San Diego Co., California, USA		NAVDAT		NAVDAT
	NAVDAT-44498	167	163	165±2					44498						91420	Lucky Strike Group (Dam Fino Prospect; Long-Time-No-See Prospect; Pocket Prospect; Lucky Strike Prospect), Descanso, Laguna Mts, San Diego Co., California, USA		NAVDAT		NAVDAT

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...