Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

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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:
Black Cloud Mine (Black Cloud Pegmatite; Spillman Prospect), Teller Co., Colorado, USA

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

mindat Locality ID: 26810
mindat URL: http://www.mindat.org/loc-26810.html

Tectonic Settings:

Total number of sublocalities beneath "Black Cloud Mine (Black Cloud Pegmatite; Spillman Prospect), Teller Co., Colorado, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 38°56'17"N
Longitude: 105°12'47"W
Decimal Degree (lat, lon): 38.938055555556,-105.21305555556

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	Amorphous	Bastnäsite	Beryl	Clay	Columbite	Epidote	Feldspar	Fluocerite	Fluorite
Fornacite	Kaolinite	Mica	Monazite	None	Not in a structural group	Quartz	Rutile	Zircon

Albite ()*	Allanite-(Ce) ()*	Bastnäsite-(Ce) ()*	Bertrandite ()*	Beryl ()*
Cassiterite ()*	Cerianite-(Ce) ()*	Fluocerite-(Ce) ()*	Fluorite ()*	Kaolinite ()*
Microcline ()*	Monazite-(Ce) ()*	Muscovite ()*	Opal ()*	Quartz ()*
Samarskite-(Y) ()*	Synchysite-(Y) ()*	Thorite ()*	Törnebohmite-(Ce) ()*	Xenotime-(Y) ()*
Yttrotantalite-(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 Be C Ca Ce F Fe H K Na Nb O P Si Sn Ta Th U Y Zr

Elements from minerals reported directly at this locality: Al Be C Ca Ce F Fe H K Na Nb O P Si Sn Ta Th U Y Zr

Structural Groups for minerals in this locality:
Allanite Amorphous Bastnäsite Beryl Clay Columbite Epidote Feldspar Fluocerite Fluorite
Fornacite Kaolinite Mica Monazite None Not in a structural group Quartz Rutile Zircon

22 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1079	1075	8803
Allanite-(Ce) ()*	Allanite Epidote	CaCe(Al₂Fe²⁺)[Si₂O₇][SiO₄]O(OH)	1079	1075	706
Bastnäsite-(Ce) ()*	Bastnäsite	Ce(CO₃)F	1079	1075	304
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂	1079	1075	606
Beryl ()*	Beryl	Be₃Al₂Si₆O₁₈	1079	1075	4286
Cassiterite ()*	Rutile	SnO₂	1079	1075	5171
Cerianite-(Ce) ()*	Fluorite	CeO₂	1079	1075	94
Fluocerite-(Ce) ()*	Fluocerite	CeF₃	1079	1075	45
Fluorite ()*	Fluorite	CaF₂	1079	1075	9617
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	1079	1075	5591
Microcline ()*	Feldspar	K(AlSi₃O₈)	1079	1075	4924
Monazite-(Ce) ()*	Monazite	Ce(PO₄)	1079	1075	945
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	1079	1075	17380
Opal ()*	Amorphous	SiO₂·nH₂O	1079	1075	2994
Quartz ()*	Quartz	SiO₂	1079	1075	61156
Samarskite-(Y) ()*	Columbite	YFe³⁺Nb₂O₈	1079	1075	353
Synchysite-(Y) ()*	None	CaY(CO₃)₂F	1079	1075	55
Thorite ()*	Zircon	Th(SiO₄)	1079	1075	1006
Törnebohmite-(Ce) ()*	Fornacite	Ce₂Al(SiO₄)₂(OH)	1079	1075	23
Xenotime-(Y) ()*	Zircon	Y(PO₄)	1079	1075	939
Yttrotantalite-(Y) ()*	Columbite	(Y,U,Fe²⁺)(Ta,Nb)(O,OH)₄	1079	1075	51
Zircon ()*	Zircon	Zr(SiO₄)	1079	1075	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

All locality data graciously provided by mindat.org

All age data...