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.
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.
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: AlAuBCCaCrCuFeHIrMgMnNaOPbPtRuSSiElements from minerals reported directly at this locality: Structural Groups for minerals in this locality:
Grau Mine (Gruu Mine), North Elder Creek Group (Joyce Mine; Hill Mine; Noble Electric Steel Company Mine; SW Hill Mine; Elder Creek Mine), Tehama Co., California, USA
West Pit (Grau Pit), Grau Mine (Gruu Mine), North Elder Creek Group (Joyce Mine; Hill Mine; Noble Electric Steel Company Mine; SW Hill Mine; Elder Creek Mine), Tehama Co., California, USA
Mill Gulch Mine, North Elder Creek Group (Joyce Mine; Hill Mine; Noble Electric Steel Company Mine; SW Hill Mine; Elder Creek Mine), Tehama Co., California, USA
Mill Gulch Mine, North Elder Creek Group (Joyce Mine; Hill Mine; Noble Electric Steel Company Mine; SW Hill Mine; Elder Creek Mine), Tehama Co., California, USA