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:
Indian Cave Sandstone, Brownville, Nemaha Co., Nebraska, USA


mindat Locality ID: 231562
mindat URL: http://www.mindat.org/loc-231562.html

Tectonic Settings:

Total number of sublocalities beneath "Indian Cave Sandstone, Brownville, Nemaha Co., Nebraska, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 40°10'33"N
Longitude: 96°35'5"W
Decimal Degree (lat, lon): 40.175833333333,-96.584722222222
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 Fe H Mg O S 

Elements from minerals reported directly at this locality: Al C Ca Fe H Mg O S 

Structural Groups for minerals in this locality: 
CalciteCopiapiteEpsomiteGypsumHalotrichiteNoneNot in a structural groupPyriteStarkeyite

10 IMA Minerals at location:
Alunogen  (*)Calcite  (*)Copiapite  (*)Epsomite  (*)Felsőbányaite  (*)
Gypsum  (*)Halotrichite  (*)Pyrite  (*)Rozenite  (*)Slavíkite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Alunogen  (*)Not in a structural groupAl2(SO4)3(H2O)12·5H2O0272
Calcite  (*)CalciteCa(CO3)027770
Copiapite  (*)CopiapiteFe2+Fe3+4(SO4)6(OH)2·20H2O0382
Epsomite  (*)EpsomiteMg(SO4)·7H2O0484
Felsőbányaite  (*)NoneAl4(SO4)(OH)10·4H2O066
Gypsum  (*)GypsumCa(SO4)·2H2O06890
Halotrichite  (*)HalotrichiteFe2+Al2(SO4)4·22H2O0409
Pyrite  (*)PyriteFeS2039462
Rozenite  (*)StarkeyiteFe2+(SO4)·4H2O0293
Slavíkite  (*)Not in a structural group(H3O)3Mg6Fe15(SO4)21(OH)18·98H2O044


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...