Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.




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:
Rocky Mountain National Park, Larimer Co., Colorado, USA


mindat Locality ID: 281955
mindat URL: http://www.mindat.org/loc-281955.html

Tectonic Settings:

Total number of sublocalities beneath "Rocky Mountain National Park, Larimer Co., Colorado, USA": 3
Total number of bottom-level sublocalities: 2

Number of Child Localities: 2
Child Localities:
Specimen Mountain
Trail Ridge Area

Latitude: 40°23'37"N
Longitude: 105°41'42"W
Decimal Degree (lat, lon): 40.393611111111,-105.695
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 C Ca F Fe H K Na O Si 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AllophaneAmorphousCalciteClayFeldsparNoneQuartzSmectite-vermiculiteTopazTridymite

8 IMA Minerals at location:
Allophane  (*)Calcite  (*)Nontronite  (*)Opal  (*)Quartz  (*)
Sanidine  (*)Topaz  (*)Tridymite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Allophane  (*)AllophaneAl2O3(SiO2)1.3-2.0·2.5-3.0H2O1191984470
Calcite  (*)CalciteCa(CO3)119198427770
Nontronite  (*)Clay Smectite-vermiculiteNa0.3Fe3+2(Si,Al)4O10(OH)2·nH2O1191984471
Opal  (*)AmorphousSiO2·nH2O11919842994
Quartz  (*)QuartzSiO2119198461156
Sanidine  (*)FeldsparK(AlSi3O8)1191984598
Topaz  (*)TopazAl2SiO4F211919841476
Tridymite  (*)TridymiteSiO21191984458


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...