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:
Devils Head Pegmatite District, Douglas Co., Colorado, USA

Oldest recorded age at locality: 1079
Youngest recorded age at locality: 1075

mindat Locality ID: 6090
mindat URL: http://www.mindat.org/loc-6090.html

Tectonic Settings:

Total number of sublocalities beneath "Devils Head Pegmatite District, Douglas Co., Colorado, USA": 30
Total number of bottom-level sublocalities: 30

Number of Child Localities: 30
Child Localities:
Baldwin Mine
C & S
California Mine
Colorado Mineral Society
Cramer Mine (Magnuson Quarry)
Cramer No. 2 Quarry (Snowdrift Quarry)
Denver Mine
Devils Head
Devils Head Copper
Devils Head Mine (Devils Head Pegmatite)
Devils Head Occurrence (C.M.S.)
Fern Creek
Little Anna
Little Eagle Occurrence
Little Eddie Mine
Little Joe
Lone Pine Feldspar Quarry (Claim: Lone Pine; MS 20867)
Long Hollow
Lost Dutchman Pegmatite
Miller Lode (Miller Mine; Miller No. 1 Lode)
Pine Nook
Princeton Group
Rusty Pick Occurrence
Skeleton No. 2 Pegmatite
Spielman Prospect (Spielman Pegmatite)
Three Musketeers Mine
Unknown Fluorine - Fluorite (MRDS - 10239627)
Unknown Fluorine - Fluorite (MRDS - 10288251)
Unnamed Pegmatite
Watson Park Mine (Watson Park Pegmatite)

Latitude: 39°14'2"N
Longitude: 105°4'15"W
Decimal Degree (lat, lon): 39.233888888889,-105.07083333333

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.

Allanite	Beryl	Columbite	Coronadite	Corundum	Epidote	Feldspar	Fluorite	Gadolinite	Mica
None	Not in a structural group	Olivine	Quartz	Rutile	Scheelite	Topaz	Zircon

Albite ()*	Allanite-(Ce) ()*	Bertrandite ()*	Beryl ()*	Cassiterite ()*
Euxenite-(Y) ()*	Fayalite ()*	Fergusonite-(Y) ()*	Fluorite ()*	Gadolinite-(Y) ()*
Hematite ()*	Hollandite ()*	Manganite ()*	Microcline ()*	Polylithionite ()*
Pyrolusite ()*	Quartz ()*	Samarskite-(Y) ()*	Thorite ()*	Topaz ()*
Xenotime-(Y) ()*	Zircon ()*

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 Ba Be Ca Ce F Fe H K Li Mn Na Nb O P Si Sn Ta Th Ti U Y Zr

Elements from minerals reported directly at this locality: Al Ba Be F Fe H K Li Mn Nb O Si Y Zr

Structural Groups for minerals in this locality:
Allanite Beryl Columbite Coronadite Corundum Epidote Feldspar Fluorite Gadolinite Mica
None Not in a structural group Olivine Quartz Rutile Scheelite Topaz Zircon

22 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1079	1075	4	187771,187776,187777,187796	8803
Allanite-(Ce) ()*	Allanite Epidote	CaCe(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)	1079	1075	5	187781,187785,187788,187791,187796	706
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂	1079	1075	0		606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1079	1075	1	187773	4286
Cassiterite ()*	Rutile	SnO₂	1079	1075	1	187777	5171
Euxenite-(Y) ()*	Columbite	Y(NbTi)O₆	1079	1075	1	187771	414
Fayalite ()*	Olivine	Fe²⁺₂(SiO₄)	1079	1075	0		371
Fergusonite-(Y) ()*	Scheelite	YNbO₄	1079	1075	0		196
Fluorite ()*	Fluorite	CaF₂	1079	1075	11	187769,187771,187772,187773,187778,187781,187785,187786,187790,187792,187796	9617
Gadolinite-(Y) ()*	Gadolinite	Y₂Fe²⁺Be₂O₂(SiO₄)₂	1079	1075	0		163
Hematite ()*	Corundum	Fe₂O₃	1079	1075	0		14640
Hollandite ()*	Coronadite	Ba(Mn⁴⁺₆Mn³⁺₂)O₁₆	1079	1075	0		243
Manganite ()*	Rutile	Mn³⁺O(OH)	1079	1075	0		770
Microcline ()*	Feldspar	K(AlSi₃O₈)	1079	1075	19	187767,187769,187771,187772,187773,187776,187777,187781,187782,187783,187784,187785,187786,187787,187788,187790,187791,187792,187796	4924
Polylithionite ()*	Mica	KLi₂AlSi₄O₁₀F₂	1079	1075	0		89
Pyrolusite ()*	Rutile	MnO₂	1079	1075	0		3106
Quartz ()*	Quartz	SiO₂	1079	1075	11	187767,187777,187778,187779,187780,187781,187782,187784,187787,187790,187792	61156
Samarskite-(Y) ()*	Columbite	YFe³⁺Nb₂O₈	1079	1075	1	187795	353
Thorite ()*	Zircon	Th(SiO₄)	1079	1075	4	187781,187783,187785,187788	1006
Topaz ()*	Topaz	Al₂SiO₄F₂	1079	1075	5	187776,187777,187784,187787,187796	1476
Xenotime-(Y) ()*	Zircon	Y(PO₄)	1079	1075	1	187783	939
Zircon ()*	Zircon	Zr(SiO₄)	1079	1075	0		5251

1 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
	Bradley_2012_132	1079	1075	1077±2	Ar/Ar						Yes				3668	Pikes Peak, El Paso Co., Colorado, USA	Pike's Peak	McCauley and Bradley (2014)	10.3749/canmin.52.2.183	CM52_183

Sample	Source Locality	Reference URL
R050193	Devils Head Mine (Devils Head Pegmatite), Devils Head Pegmatite District, Douglas Co., Colorado, USA	https://rruff.info/R050193

All locality data graciously provided by mindat.org

All age data...