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:
Hammonton District (Yuba River District; Yuba Gold Field; Yuba Dredge Field; Yuba Consolidated Gold Fields), Yuba Co., California, USA

mindat Locality ID: 98627
mindat URL: http://www.mindat.org/loc-98627.html

Tectonic Settings:

Total number of sublocalities beneath "Hammonton District (Yuba River District; Yuba Gold Field; Yuba Dredge Field; Yuba Consolidated Gold Fields), Yuba Co., California, USA": 6
Total number of bottom-level sublocalities: 5

Number of Child Localities: 2
Child Localities:
Hammonton
Yuba Placer Dredge 21 (Cal Sierra Development; Dredge No. 21)

Latitude: 39°11'55"N
Longitude: 121°25'28"W
Decimal Degree (lat, lon): 39.198611111111,-121.42444444444

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	None	Pyrite	Ullmannite

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: As Au Ir Os Pd Pt Rh Ru S

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Copper None Pyrite Ullmannite

9 IMA Minerals at location:

Gold ()*	Hollingworthite ()*	Iridium ()*	Laurite ()*	Osmium ()*
Palladium ()*	Platinum ()*	Rutheniridosmine ()*	Ruthenium ()*

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Gold ()*	Copper	Au	3	184099,184101,184103	30554
Hollingworthite ()*	Ullmannite	RhAsS	1	184101	119
Iridium ()*	Copper	Ir	1	184101	162
Laurite ()*	Pyrite	RuS₂	1	184101	226
Osmium ()*	None	Os	1	184101	169
Palladium ()*	Copper	Pd	1	184101	59
Platinum ()*	Copper	Pt	1	184101	485
Rutheniridosmine ()*	None	(Ir,Os,Ru)	1	184101	47
Ruthenium ()*	None	Ru	1	184101	46

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...