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Billiken and Black Knight Lodes Occurrence, Critchell area, Jefferson County, Colorado, USAi
Regional Level Types
Billiken and Black Knight Lodes OccurrenceOccurrence
Critchell areaArea
Jefferson CountyCounty
ColoradoState
USACountry

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Latitude & Longitude (WGS84):
39° 27' 59'' North , 105° 13' 8'' West
Latitude & Longitude (decimal):
39.46666,-105.21891
GRN:
N27W59
Type:
Occurrence
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Aspen Park882 (2011)10.4km
Roxborough Park9,099 (2011)11.5km
Ken Caryl32,438 (2014)15.2km
Indian Hills1,280 (2011)16.7km
Louviers269 (2011)18.2km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Littleton Gem and Mineral Club, Inc.Littleton, Colorado24km
Colorado Mineral SocietyLakewood, Colorado29km
Denver Gem and Mineral GuildDenver, Colorado36km
Friends of Mineralogy - Colorado Chapter Denver, Colorado36km
Western Interior Paleontological SocietyDenver, Colorado36km
Mindat Locality ID:
6237
Long-form identifier:
mindat:1:2:6237:7
GUID (UUID V4):
0


Several pegmatite dikes and veins, are in the general vicinity of Critchell. This locality is on the Phillipsburg-Deermont-Conifer road (South Deer Creek Road), about 5 mi east of Conifer and U.S. Highway 285. The Black Knight and several other vein deposits are 2 mi south-southwest of Critchell. ("Minerals of Colorado, updated & revised", p. 19, by Eckel, Edwin B., 1997)
Structure: Kennedy Gulch Fault Zone, Billiken Fault, Black Knight Fault Front Range Uplift, Pikes Peak Batholith

Tectonics: Central Cordillera (Southern Rocky Mtns)

Commodity: Deposit may have contained Au and ag, but this is unconfirmed

Deposit: Layered gneiss and amphibolite sequence trends about N 70 w, 50 to 60 ne; biotite gneiss encloses 5- to 60-ft-wide layer of magnetite-rich garnet gneiss. Black knight fault parallels kennedy gulch fault zone or breccia reef and is marked by thin subparallel fractures and 3- to 5-ft-thick breccia zone with u, cu, and carbonate minerals; secondary u minerals on outcrop. Billiken fault strikes nne, dips 50 to 70 SE and presumably intersects black knight fault. Colloform pitchblende fills thin fractures and was brecciated before deposition of cu sulfides. Primary u appears confined to intersections of black knight fault with magnetite-rich garnet gneiss layer. Duplicate d002229 deleted ; info.src : 1 pub lit

Development: Originally prospected for cu, au, and ag. U discovered in 1955; dmea exploration in 1957-58, but no commercial ore was found.

Rock formation(s): Pikes Peak Granite;Basic Dike
Migmatite


Ore(s): Intersection Of Fault With Magnetite-Garnet Gneiss

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


12 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
ⓘ Becquerelite
Formula: Ca(UO2)6O4(OH)6 · 8H2O
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Cuprite
Formula: Cu2O
ⓘ Fourmarierite
Formula: Pb(UO2)4O3(OH)4 · 4H2O
ⓘ 'Garnet Group'
Formula: X3Z2(SiO4)3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Pyrite
Formula: FeS2
ⓘ Tenorite
Formula: CuO
ⓘ Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
ⓘ Uraninite
Formula: UO2
ⓘ Uraninite var. Pitchblende
Formula: UO2
ⓘ Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘBornite2.BA.15Cu5FeS4
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘCuprite4.AA.10Cu2O
ⓘTenorite4.AB.10CuO
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘUraninite
var. Pitchblende		4.DL.05UO2
ⓘ4.DL.05UO2
ⓘBecquerelite4.GB.10Ca(UO2)6O4(OH)6 · 8H2O
ⓘFourmarierite4.GB.25Pb(UO2)4O3(OH)4 · 4H2O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘAutunite8.EB.05Ca(UO2)2(PO4)2 · 10-12H2O
ⓘTorbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Group 9 - Silicates
ⓘUranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Unclassified
ⓘ'Garnet Group'-X3Z2(SiO4)3

List of minerals for each chemical element

HHydrogen
Hⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hⓘ BecquereliteCa(UO2)6O4(OH)6 · 8H2O
Hⓘ FourmarieritePb(UO2)4O3(OH)4 · 4H2O
Hⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Hⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
OOxygen
Oⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oⓘ BecquereliteCa(UO2)6O4(OH)6 · 8H2O
Oⓘ CupriteCu2O
Oⓘ FourmarieritePb(UO2)4O3(OH)4 · 4H2O
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Uraninite var. PitchblendeUO2
Oⓘ TenoriteCuO
Oⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Oⓘ UraniniteUO2
Oⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Oⓘ Garnet GroupX3Z2(SiO4)3
SiSilicon
Siⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Siⓘ Garnet GroupX3Z2(SiO4)3
PPhosphorus
Pⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Pⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
SSulfur
Sⓘ BorniteCu5FeS4
Sⓘ ChalcopyriteCuFeS2
Sⓘ PyriteFeS2
CaCalcium
Caⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Caⓘ BecquereliteCa(UO2)6O4(OH)6 · 8H2O
Caⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
FeIron
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CupriteCu2O
Cuⓘ TenoriteCuO
Cuⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
PbLead
Pbⓘ FourmarieritePb(UO2)4O3(OH)4 · 4H2O
UUranium
Uⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Uⓘ BecquereliteCa(UO2)6O4(OH)6 · 8H2O
Uⓘ FourmarieritePb(UO2)4O3(OH)4 · 4H2O
Uⓘ Uraninite var. PitchblendeUO2
Uⓘ TorberniteCu(UO2)2(PO4)2 · 12H2O
Uⓘ UraniniteUO2
Uⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O

Other Databases

Link to USGS MRDS:10013756

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate

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References

Peterson, W.L., (1964), Geology of the Platte Canyon Quadrangle, Colorado: USGS Bull. 1181-c, 23 P., 1 Pl.
Moore, F.B., (1964), Black Knight and Billiken Lodes, in Sims, P.K., and Sheridan, D.M., Geology of Uranium Deposits in the Front Range, Colorado: USGS Bull. 1159, P. 101.
Nelson-Moore, James L., Collins, Donna Bishop, Hornbaker, A. L. (1978) Radioactive Mineral Occurrences of Colorado and Bibliography. Bulletin 40. Colorado State Geological Surveypp.190-191
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