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:
David H Shaft, Tomichi District, Gunnison Co., Colorado, USA

mindat Locality ID: 113828
mindat URL: http://www.mindat.org/loc-113828.html

Tectonic Settings:

Total number of sublocalities beneath "David H Shaft, Tomichi District, Gunnison Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°32'42"N
Longitude: 106°22'58"W
Decimal Degree (lat, lon): 38.545,-106.38277777778

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The 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.

Amphibole	Aragonite	Calcite	None	Not in a structural group	Rocksalt	Tetrahedrite

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: Ag C Ca Cu Fe H Mg O Pb S Sb Si Zn

Elements from minerals reported directly at this locality: Ag C Ca Cu Fe H Mg O Pb S Sb Si Zn

Structural Groups for minerals in this locality:
Amphibole Aragonite Calcite None Not in a structural group Rocksalt Tetrahedrite

9 IMA Minerals at location:

Calcite ()*	Cerussite ()*	Dolomite ()*	Galena ()*	Hemimorphite ()*
Smithsonite ()*	Stephanite ()*	Tetrahedrite-(Zn) ()*	Tremolite ()*

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Calcite ()*	Calcite	Ca(CO₃)	27770
Cerussite ()*	Aragonite	Pb(CO₃)	4979
Dolomite ()*	None	CaMg(CO₃)₂	9895
Galena ()*	Rocksalt	PbS	24243
Hemimorphite ()*	Not in a structural group	Zn₄(Si₂O₇)(OH)₂·H₂O	1689
Smithsonite ()*	Calcite	Zn(CO₃)	2473
Stephanite ()*	None	Ag₅SbS₄	586
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	5317
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	2562

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...