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:
Twenty Mule Team Canyon, Furnace Creek District (Furnace Creek Borate District; Death Valley Area Borate Deposits; Ryan Area), Inyo Co., California, USA


mindat Locality ID: 218692
mindat URL: http://www.mindat.org/loc-218692.html

Tectonic Settings:

Total number of sublocalities beneath "Twenty Mule Team Canyon, Furnace Creek District (Furnace Creek Borate District; Death Valley Area Borate Deposits; Ryan Area), Inyo Co., California, USA": 11
Total number of bottom-level sublocalities: 11

Number of Child Localities: 11
Child Localities:
Meridian Claim
Mott Prospect (Mott Colemanite Prospect; Mott Open Cut)
South Meridian Claim
Twenty Mule Team Road Occurrences
Unnamed Borate Occurrence [28]
Unnamed Borate Occurrence [29]
Unnamed Borate Prospects [18]
Unnamed Borate Prospects [19]
Unnamed Borate Prospects [20]
Unnamed Borate Prospects [22]
Unnamed Borate Prospects [23]

Latitude: 36°23'48"N
Longitude: 116°47'1"W
Decimal Degree (lat, lon): 36.396666666667,-116.78361111111

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 C Ca Cl H Mg Na O S Si 

Elements from minerals reported directly at this locality: C H Na O 

Structural Groups for minerals in this locality: 
AnalcimeClayGypsumNoneNot in a structural groupRocksaltSmectite-vermiculite

20 IMA Minerals at location:
Analcime  (*)Aristarainite  (*)Colemanite  (*)Ginorite  (*)Gowerite  (*)
Gypsum  (*)Halite  (*)Hungchaoite  (*)Hydroboracite  (*)Mcallisterite  (*)
Meyerhofferite  (*)Montmorillonite  (*)Nobleite  (*)Priceite  (*)Sassolite  (*)
Sborgite  (*)Thénardite  (*)Thermonatrite  (*)Ulexite  (*)Wardsmithite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O2157571,1575731627
Aristarainite  (*)Not in a structural groupNa2Mg[B6O8(OH)4]2·4H2O11575734
Colemanite  (*)NoneCaB3O4(OH)3·H2O9157571,157572,157573,157574,157577,157578,157579,157580,157581144
Ginorite  (*)NoneCa2B14O20(OH)6·5H2O2157572,15757311
Gowerite  (*)NoneCa[B5O8(OH)][B(OH)3]·3H2O4157571,157572,157573,15757613
Gypsum  (*)GypsumCa(SO4)·2H2O11575726890
Halite  (*)RocksaltNaCl11575741398
Hungchaoite  (*)NoneMgB4O5(OH)4·7H2O3157571,157573,1575756
Hydroboracite  (*)NoneCaMg[B3O4(OH)3]2·3H2O115757242
Mcallisterite  (*)NoneMg2[B6O7(OH)6]2·9H2O3157571,157572,1575739
Meyerhofferite  (*)NoneCaB3O3(OH)5·H2O115757223
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O11575711508
Nobleite  (*)NoneCaB6O9(OH)2·3H2O3157571,157573,15757611
Priceite  (*)NoneCa2B5O7(OH)5·H2O3157571,157572,15757433
Sassolite  (*)NoneB(OH)32157572,15757331
Sborgite  (*)NoneNaB5O6(OH)4·3H2O2157573,1575746
Thénardite  (*)NoneNa2(SO4)1157574299
Thermonatrite  (*)NoneNa2(CO3)·H2O064
Ulexite  (*)NoneNaCaB5O6(OH)6·5H2O3157571,157572,157573160
Wardsmithite  (*)NoneCa5Mg(B4O7)6·30H2O11575735



No ages have been assigned to this locality yet.

SampleSource LocalityReference URL
R050420Twenty Mule Team Canyon, Furnace Creek District (Furnace Creek Borate District; Death Valley Area Borate Deposits; Ryan Area), Inyo Co., California, USAhttps://rruff.info/R050420
R070305Mott Prospect (Mott Colemanite Prospect; Mott Open Cut), Twenty Mule Team Canyon, Furnace Creek District (Furnace Creek Borate District; Death Valley Area Borate Deposits; Ryan Area), Inyo Co., California, USAhttps://rruff.info/R070305


All locality data graciously provided by mindat.org

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