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:
Unnamed Coal Mine, Weld Co., Colorado, USA

mindat Locality ID: 298269
mindat URL: http://www.mindat.org/loc-298269.html

Tectonic Settings:

Total number of sublocalities beneath "Unnamed Coal Mine, Weld Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 40°5'8"N
Longitude: 104°57'27"W
Decimal Degree (lat, lon): 40.085555555556,-104.9575

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.

Alunite	Blödite	Calcite	Epsomite	Gypsum	Hexahydrite	None	Picromerite	Rocksalt

Blödite ()*	Epsomite ()*	Eugsterite ()*	Gypsum ()*	Halite ()*
Hexahydrite ()*	Konyaite ()*	Löweite ()*	Mirabilite ()*	Natrojarosite ()*
Nitratine ()*	Thénardite ()*	Wattevilleite ()*

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: Ca Cl Fe H Mg N Na O S

Elements from minerals reported directly at this locality: Ca Cl Fe H Mg N Na O S

Structural Groups for minerals in this locality:
Alunite Blödite Calcite Epsomite Gypsum Hexahydrite None Picromerite Rocksalt

13 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of localities containing mineral
Blödite ()*	Blödite	Na₂Mg(SO₄)₂·4H₂O	130
Epsomite ()*	Epsomite	Mg(SO₄)·7H₂O	484
Eugsterite ()*	None	Na₄Ca(SO₄)₃·2H₂O	32
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	6890
Halite ()*	Rocksalt	NaCl	1398
Hexahydrite ()*	Hexahydrite	Mg(SO₄)·6H₂O	251
Konyaite ()*	Picromerite	Na₂Mg(SO₄)₂·5H₂O	20
Löweite ()*	None	Na₁₂Mg₇(SO₄)₁₃·15H₂O	28
Mirabilite ()*	None	Na₂(SO₄)·10H₂O	223
Natrojarosite ()*	Alunite	NaFe³⁺₃(SO₄)₂(OH)₆	254
Nitratine ()*	Calcite	Na(NO₃)	91
Thénardite ()*	None	Na₂(SO₄)	299
Wattevilleite ()*	None	Na₂Ca(SO₄)₂·4H₂O (?)	10

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...