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:
Kramer Hills [town], East Kramer Borate Area (East Kramer Colemanite Area), East Kramer District, San Bernardino Co., California, USA


mindat Locality ID: 274004
mindat URL: http://www.mindat.org/loc-274004.html

Tectonic Settings:

Total number of sublocalities beneath "Kramer Hills [town], East Kramer Borate Area (East Kramer Colemanite Area), East Kramer District, San Bernardino Co., California, USA": 60
Total number of bottom-level sublocalities: 59

Number of Child Localities: 55
Child Localities:
Black Rock Prospect [3]
Cape Point Prospect
GW Gold Placer Claims
Kramer Hills [hills]
Kramer Hills And Herkelrath (Kramer Hills; Shaharold Mines; Shaherald Mines)
Kramer Hills Gold (Unnamed Prospect)
Log Claims
MM Lode Claims
Queenie Prospect
Red Dog Claims (Gold Occurrence; Unnamed Prospect)
Unnamed Ag Prospect [22]
Unnamed Au Placer Prospects [211]
Unnamed Au Placer Prospects [214]
Unnamed Au Prospect [102]
Unnamed Au Prospect [131]
Unnamed Au Prospect [19] (Unnamed Shaft Prospect)
Unnamed Au Prospect [202]
Unnamed Au Prospect [204]
Unnamed Au Prospect [21] (Unnamed Shaft Prospect)
Unnamed Au Prospect [22] (Unnamed Shaft Prospect)
Unnamed Au Prospect [26] (Unnamed Shaft And Prospect)
Unnamed Au Prospect [27] (Unnamed Shaft; Adit And Prospects)
Unnamed Au Prospect [51]
Unnamed Au Prospect [58]
Unnamed Au Prospect [97]
Unnamed Au Prospect [98]
Unnamed Au Prospects [29]
Unnamed Au Prospects [32]
Unnamed Au Prospects [33]
Unnamed Au Prospects [34]
Unnamed Au Prospects [35]
Unnamed Au-Ag Prospect [91] (Unnamed Mine Shafts)
Unnamed Au-Zn Occurrence [6] (Unknown Skarn Occurrence)
Unnamed Au-Zn Prospect [5] (Unnamed Mine)
Unnamed Clay Occurrence [14] (Unnamed Mine)
Unnamed Clay Prospect [1](MRDS - 10286782)
Unnamed Cr-Zn-Co-Ni-Au Prospect [1]
Unnamed Cu Prospect [57]
Unnamed Feldspar Prospect [1] (Unnamed Mine)
Unnamed Gemstone Mine [2]
Unnamed Gemstone Prospect [3]
Unnamed Gemstone Prospect [4]
Unnamed Gemstone Prospect [7]
Unnamed Th-U Prospect [1] (Unnamed Shaft Prospect)
Unnamed U Prospect [11]
Unnamed U Prospect [14]
Unnamed U Prospect [19]
Unnamed U Prospect [23]
Unnamed U Prospect [30]
Unnamed U Prospect [34]
Unnamed U Prospect [39]
Unnamed U-gemstone Prospect [1]
Unnamed Zn Prospect [1] (Unnamed Shaft Prospect)
White Hope Mine
Yellow Tiger Claim

Latitude: 34°54'35"N
Longitude: 117°27'26"W
Decimal Degree (lat, lon): 34.909722222222,-117.45722222222
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe 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.

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 C Ca H K Mg O P Si U V 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AutuniteCalciteCopperNoneQuartz

6 IMA Minerals at location:
Autunite  (*)Carnotite  (*)Gold  (*)Magnesite  (*)Quartz  (*)
Uranophane-α  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O11714911272
Carnotite  (*)NoneK2(UO2)2(VO4)2·3H2O2171488,1714911184
Gold  (*)CopperAu3171490,171494,17149830554
Magnesite  (*)CalciteMg(CO3)11714891487
Quartz  (*)QuartzSiO23171490,171494,17149861156
Uranophane-α  (*)NoneCa(UO2)2(SiO3OH)2·5H2O1171491890


No ages have been assigned to this locality yet.
SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

All age data...

Other copyright data...