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:
Sugarloaf Mountain, Black Wonder District, Diablo Range, Santa Clara Co., California, USA


mindat Locality ID: 239112
mindat URL: http://www.mindat.org/loc-239112.html

Tectonic Settings:

Total number of sublocalities beneath "Sugarloaf Mountain, Black Wonder District, Diablo Range, Santa Clara Co., California, USA": 5
Total number of bottom-level sublocalities: 5

Number of Child Localities: 5
Child Localities:
Billy Goat Prospect (Wasp; K.H.D.)
Deforest Prospect
Jones Group
Mount Hamilton Melanophlogite Locality
Pennsylvania Mine

Latitude: 37°21'5"N
Longitude: 121°29'32"W
Decimal Degree (lat, lon): 37.351388888889,-121.49222222222
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: Al Ba C Ca Cu Fe H Mg Mn Na O S Si V 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AmphiboleBaryteBrauniteCalciteChalcopyriteCopperCristobaliteHarmotomeHumiteNone
QuartzRhodoniteSpinelWelinite

19 IMA Minerals at location:
Baryte  (*)Braunite  (*)Calcite  (*)Chalcopyrite  (*)Copper  (*)
Cristobalite  (*)Franciscanite  (*)Gageite  (*)Harmotome  (*)Hausmannite  (*)
Howieite  (*)Kutnohorite  (*)Melanophlogite  (*)Quartz  (*)Rhodochrosite  (*)
Rhodonite  (*)Riebeckite  (*)Santaclaraite  (*)Sonolite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Baryte  (*)BaryteBa(SO4)117611211547
Braunite  (*)BrauniteMn2+Mn3+6O8(SiO4)1176112483
Calcite  (*)CalciteCa(CO3)117611227770
Chalcopyrite  (*)ChalcopyriteCuFeS2117611227198
Copper  (*)CopperCu11761123846
Cristobalite  (*)CristobaliteSiO22176111,176112453
Franciscanite  (*)WeliniteMn2+6(V5+   )(SiO4)2O3(OH)311761123
Gageite  (*)NoneMn2+21Si8O27(OH)20117611214
Harmotome  (*)HarmotomeBa2(Si12Al4)O32·12H2O1176112290
Hausmannite  (*)SpinelMn2+Mn3+2O41176112350
Howieite  (*)NoneNa(Fe2+,Fe3+,Al,Mg)12(Si6O17)2(O,OH)10117611216
Kutnohorite  (*)NoneCaMn2+(CO3)21176112234
Melanophlogite  (*)NoneC2H17O5·Si46O92117611138
Quartz  (*)QuartzSiO2117611261156
Rhodochrosite  (*)CalciteMn(CO3)11761121711
Rhodonite  (*)RhodoniteCaMn3Mn(Si5O15)1176112969
Riebeckite  (*)Amphibole   Na2(Fe2+3Fe3+2)Si8O22(OH)21176112375
Santaclaraite  (*)NoneCaMn2+4Si5O14(OH)2·H2O11761122
Sonolite  (*)HumiteMn2+9(SiO4)4(OH)2117611250


No ages have been assigned to this locality yet.
SampleSource LocalityReference URL
R060056Pennsylvania Mine, Sugarloaf Mountain, Black Wonder District, Diablo Range, Santa Clara Co., California, USAhttps://rruff.info/R060056
R060346Pennsylvania Mine, Sugarloaf Mountain, Black Wonder District, Diablo Range, Santa Clara Co., California, USAhttps://rruff.info/R060346

All locality data graciously provided by mindat.org

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