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:
Avon District (Mica Mountain District), Latah Co., Idaho, USA

Oldest recorded age at locality: 23.8
Youngest recorded age at locality: 5.3

mindat Locality ID: 28072
mindat URL: http://www.mindat.org/loc-28072.html

Tectonic Settings:

Total number of sublocalities beneath "Avon District (Mica Mountain District), Latah Co., Idaho, USA": 20
Total number of bottom-level sublocalities: 19

Number of Child Localities: 19
Child Localities:
Campbell Mine (Thatuna Lease No. 7)
Doerr Mine (Bentz Claim)
Hungry Gut Mine (Avon; Carlson Lease)
Lindquist Prospect (Monroe; Munro Mill; Avon)
Lucky Jim Prospect (J. H. Nesbitt)
Luella Mine (Campbell Lease)
Maxine No. 2 Mine
McCornack Prospect
Morning Star Claims
Muscovite Mine
O'Donnell Opal Occurrence
Olson Mine (Fitzgerald; Carlson Lease; Scott Rogers)
Sand Mountain
Steelsmith Mine (Levi Anderson; Olson-Vennigerholz)
Sunshine Claim (Violet; Atlas)
Troy Sillimanite Company Prospect (Olson)
Unnamed Opal Location (MRDS - 10168705)
Unnamed Pegmatite
Witherow Mine

Latitude: 46°51'36"N
Longitude: 116°38'22"W
Decimal Degree (lat, lon): 46.86,-116.63944444444

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 B Be C Ca Cu Fe H K Li Mn Na O P Si 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
BerylClayCorundumGarnetMalachiteMicaNoneNot in a structural groupOlivineQuartz
TourmalineVivianite

14 IMA Minerals at location:
Almandine  (*)Ankerite  (*)Beryl  (*)Graphite  (*)Hematite  (*)
Kyanite  (*)Lithiophilite  (*)Malachite  (*)Muscovite  (*)Quartz  (*)
Schorl  (*)Sillimanite  (*)Strengite  (*)Vivianite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Almandine  (*)GarnetFe2+3Al2(SiO4)34209103,209107,209111,2091122353
Ankerite  (*)NoneCa(Fe2+,Mg)(CO3)212091163092
Beryl  (*)BerylBe3Al2Si6O189209098,209102,209103,209104,209106,209107,209109,209111,2091124286
Graphite  (*)NoneC12091112812
Hematite  (*)CorundumFe2O3120910714640
Kyanite  (*)Not in a structural groupAl2OSiO423.85.312091141507
Lithiophilite  (*)OlivineLiMn2+(PO4)1209111155
Malachite  (*)MalachiteCu2(CO3)(OH)223.85.3120911412537
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)25209103,209107,209111,209112,20911317380
Quartz  (*)QuartzSiO24209103,209107,209111,20911261156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)3209107,209111,2091122705
Sillimanite  (*)Not in a structural groupAl2SiO523.85.312091141516
Strengite  (*)NoneFe3+(PO4)·2H2O1209116263
Vivianite  (*)VivianiteFe2+3(PO4)2·8H2O2209111,209116636



1 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
NAVDAT-4789423.85.314.55±9.25   47894    141224Troy Sillimanite Company Prospect (Olson), Avon District (Mica Mountain District), Latah Co., Idaho, USA NAVDAT NAVDAT 


SampleSource LocalityReference URL


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