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:
Rockland, Diamond Creek District, Klamath Mts, Del Norte Co., California, USA

Oldest recorded age at locality: 163
Youngest recorded age at locality: 163

mindat Locality ID: 231122
mindat URL: http://www.mindat.org/loc-231122.html

Tectonic Settings:

Total number of sublocalities beneath "Rockland, Diamond Creek District, Klamath Mts, Del Norte Co., California, USA": 40
Total number of bottom-level sublocalities: 37

Number of Child Localities: 19
Child Localities:
Bears Nest Occurrence
Big Boy Mine (Big Boy Group; Big Boy Cinnabar Group)
Blue Gravel Placer Mine
Cleopatra Mine (Dedrick Mine)
Five Diamonds Occurrence
High Plateau Mountain
Keystone Mine
McKee Occurrence
Mercury Group
Pine Flat Mountain
Pleasant Day Group
Prudential Mine
Richey Property
Stone Deposit
Sunny Brook Prospect (Sunnybrook Prospect; Diamond Creek Cinnabar Company; Rockland; Riamond Creek)
Unnamed Hg Occurrence (5)
Unnamed Ni Occurrence (1)
Unspecified Cu Occurrence (2)
Wilmot Occurrence (Patrick Creek; Shulte Brothers; High Dome)

Latitude: 41°58'27"N
Longitude: 123°56'"W
Decimal Degree (lat, lon): 41.974166666667,-123.93333333333

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.

Chlorite	Clay	Copper	Garnet	Kaolinite	Mica	Nickeline	None	Not in a structural group	Pyrite
Quartz	Serpentine	Spinel

Chalcocite ()*	Chromite ()*	Cinnabar ()*	Clinochlore ()*	Copper ()*
Cuprite ()*	Gold ()*	Kaolinite ()*	Magnetite ()*	Mercury ()*
Muscovite ()*	Népouite ()*	Pyrite ()*	Pyrrhotite ()*	Quartz ()*
Silver ()*	Uvarovite ()*

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 Au Ca Cr Cu Fe H Hg K Mg Ni O S Si

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Chlorite Clay Copper Garnet Kaolinite Mica Nickeline None Not in a structural group Pyrite
Quartz Serpentine Spinel

17 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
Chalcocite ()*	None	Cu₂S			1	153825	5707
Chromite ()*	Spinel	Fe²⁺Cr₂O₄	163	163	14	153829,153830,153831,153834,153838,153840,153841,153842,153843,153849,153851,153852,153855,153861	3902
Cinnabar ()*	None	HgS			3	153823,153846,153857	2600
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	163	163	1	153831	1756
Copper ()*	Copper	Cu			1	153844	3846
Cuprite ()*	Not in a structural group	Cu₂O			1	153860	2970
Gold ()*	Copper	Au			3	153822,153824,153854	30554
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄			1	153823	5591
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄			1	153825	14899
Mercury ()*	None	Hg			1	153857	397
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂			1	153823	17380
Népouite ()*	Serpentine Clay	Ni₃Si₂O₅(OH)₄			1	153859	66
Pyrite ()*	Pyrite	FeS₂			1	153854	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈			1	153822	9056
Quartz ()*	Quartz	SiO₂			2	153854,153857	61156
Silver ()*	Copper	Ag			1	153822	5186
Uvarovite ()*	Garnet	Ca₃Cr₂(SiO₄)₃	163	163	3	153830,153831,153839	212

6 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID
podchrome-00242	163	163	Middle Jurassic (162-164 Ma)	Cr	74587	Bluebird Mine (High Point Mine), High Plateau Mountain, Rockland, Diamond Creek District, Klamath Mts, Del Norte Co., California, USA	Bluebird	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00239	163	163	Middle Jurassic (162-164 Ma)	Cr	74662	Brown Mine (High Plateau Browns Mine), High Plateau Mountain, Rockland, Diamond Creek District, Klamath Mts, Del Norte Co., California, USA	High Plateau	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00241	163	163	Middle Jurassic (162-164 Ma)	Cr	74672	Judy Mine (Victory No 2; Judy Claims 1-3-4; Judy Group; Hicks Mine), High Plateau Mountain, Rockland, Diamond Creek District, Klamath Mts, Del Norte Co., California, USA	Judy	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00243	163	163	Middle Jurassic (162-164 Ma)	Cr	74736	Skyline Mine (Skyline Deposit), High Plateau Mountain, Rockland, Diamond Creek District, Klamath Mts, Del Norte Co., California, USA	Skyline	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00238	163	163	Middle Jurassic (162-164 Ma)	Cr	74663	Hole In The Ground Mine (Lucky Queen Gold Claim; Sarina), Pine Flat Mountain, Rockland, Diamond Creek District, Klamath Mts, Del Norte Co., California, USA	Hole in the Ground	Moiser et al. (2012)	USGSSIR2012_5157
podchrome-00244	163	163	Middle Jurassic (162-164 Ma)	Cr	74728	Richey Property, Rockland, Diamond Creek District, Klamath Mts, Del Norte Co., California, USA	Richey Property	Moiser et al. (2012)	USGSSIR2012_5157

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...