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"Cerite" occurrences ("Rusty Gold" locality), Jamestown, Jamestown District, Boulder Co., Colorado, USAi
Regional Level Types
"Cerite" occurrences ("Rusty Gold" locality)Group of Occurrences
Jamestown- not defined -
Jamestown DistrictMining District
Boulder Co.County
ColoradoState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84): 40° 8' 10'' North , 105° 21' 56'' West
Latitude & Longitude (decimal): 40.13633,-105.36580
GeoHash:G#: 9xjh66dgn
Locality type:Group of Occurrences
Köppen climate type:BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Jamestown264 (2017)3.0km
Lazy Acres920 (2011)5.5km
Bark Ranch213 (2011)6.6km
Altona501 (2011)7.1km
Sunshine230 (2011)7.8km


Goddard & Glass describes 4 separate occurences of radioactive "cerite" in this area, also called "Rusty Gold" locality. The mineralogical zoned REE-rich veins occurs in pegmatite and aplite along the contact of a granite with schisct inclusions. They were described as veins wih with dark black allanite borders and grey cerite-rich cores.
Stern et al. (2013), as well as Pavel M. Kartashov has showed that the cerite is actually fluorbritholite-(Ce)


Regions containing this locality

North America PlateTectonic Plate
Rocky Mountains, North AmericaMountain Range

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

Allanite-(Ce)
Formula: {CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Reference: Pavel M. Kartashov analytical data (2011), Philip Persson material
Bastnäsite-(Ce)
Formula: Ce(CO3)F
Description: described in Goddard & Glass ( 1940) as bastnäsite without the levinson suffix
Reference: Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404
Cerite-(Ce)
Formula: (Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Description: Originally described as cerite, but recent analysis has showed it t be fluorbritholite-(Ce)
Reference: Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404 ; Stern, C., Allaz, J., Raschke, M., Cortes, S. and Persson, P. (2013): Proterozoic fluorbritholite-bearing REE-Rich hydrothermal veins from near Jamestown, Colorado. Rocky Mountain Section - 65th Annual Meeting (15-17 May 2013). Geological Society of America Abstracts with Programs. Vol. 45, No. 5, p.41
Epidote
Formula: {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference: Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404
Fluorbritholite-(Ce)
Formula: (Ce,Ca)5(SiO4)3F
Reference: Pavel M. Kartashov analytical data (2011), Philip Persson material; Stern, C., Allaz, J., Raschke, M., Cortes, S. and Persson, P. (2013): Proterozoic fluorbritholite-bearing REE-Rich hydrothermal veins from near Jamestown, Colorado. Rocky Mountain Section - 65th Annual Meeting (15-17 May 2013). Geological Society of America Abstracts with Programs. Vol. 45, No. 5, p.41
Fluorite
Formula: CaF2
Reference: Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404; Pavel M. Kartashov analytical data (2011), Philip Persson material:
Fluorite var: Yttrofluorite
Formula: (Ca1-xYx)F2+x where 0.05< x <0.3
Reference: Pavel M. Kartashov analytical data (2011), Philip Persson material
'Monazite'
Reference: Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404
Perbøeite-(Ce)
Formula: (CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
Reference: Pavel M. Kartashov analytical data (2014), Philip Persson material
Pyrite
Formula: FeS2
Reference: Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25, 381-404
Quartz
Formula: SiO2
Reference: Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404; Pavel M. Kartashov analytical data (2011), Philip Persson material
Törnebohmite-(Ce)
Formula: (Ce,La)2Al(SiO4)2(OH)
Reference: Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404
Uraninite
Formula: UO2
Reference: Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404
Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Reference: Pavel M. Kartashov analytical data (2011), Philip Persson material
Uranophane-β
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Reference: Pavel M. Kartashov analytical data (2011), Philip Persson material

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Pyrite2.EB.05aFeS2
Group 3 - Halides
Fluorite3.AB.25CaF2
var: Yttrofluorite3.AB.25(Ca1-xYx)F2+x where 0.05< x <0.3
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Uraninite4.DL.05UO2
Group 5 - Nitrates and Carbonates
Bastnäsite-(Ce)5.BD.20aCe(CO3)F
Group 9 - Silicates
Allanite-(Ce)9.BG.05b{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Cerite-(Ce) ?9.AG.20(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Epidote9.BG.05a{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fluorbritholite-(Ce)9.AH.25(Ce,Ca)5(SiO4)3F
Törnebohmite-(Ce)9.AG.45(Ce,La)2Al(SiO4)2(OH)
Uranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Uranophane-β9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
Unclassified Minerals, Rocks, etc.
'Monazite'-
Perbøeite-(Ce)-(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bastnäsite-(Ce)16a.1.1.1Ce(CO3)F
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Cerite-(Ce) ?52.4.6.1(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Fluorbritholite-(Ce)52.4.9.8(Ce,Ca)5(SiO4)3F
Törnebohmite-(Ce)52.4.5.1(Ce,La)2Al(SiO4)2(OH)
Group 53 - NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
Insular SiO4 Groups and Other Anions of Complex Cations with (UO2)
Uranophane53.3.1.2Ca(UO2)2(SiO3OH)2 · 5H2O
Uranophane-β53.3.1.9Ca(UO2)2(SiO3OH)2 · 5H2O
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Allanite-(Ce)58.2.1a.1{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Epidote58.2.1a.7{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Fluorite
var: Yttrofluorite
-(Ca1-xYx)F2+x where 0.05< x <0.3
'Monazite'-
Perbøeite-(Ce)-(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2

List of minerals for each chemical element

HHydrogen
H Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
H Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
H UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
H Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
H Perbøeite-(Ce)(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
H Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
H Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
CCarbon
C Bastnäsite-(Ce)Ce(CO3)F
OOxygen
O Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3F
O Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
O Bastnäsite-(Ce)Ce(CO3)F
O Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
O UraniniteUO2
O UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
O Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
O QuartzSiO2
O Perbøeite-(Ce)(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
O Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
O Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
FFluorine
F Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3F
F Bastnäsite-(Ce)Ce(CO3)F
F Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
F FluoriteCaF2
MgMagnesium
Mg Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
AlAluminium
Al Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Al Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
Al Perbøeite-(Ce)(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
Al Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
SiSilicon
Si Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3F
Si Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Si Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
Si UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Si Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
Si QuartzSiO2
Si Perbøeite-(Ce)(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
Si Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Si Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
SSulfur
S PyriteFeS2
CaCalcium
Ca Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3F
Ca Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Ca UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Ca Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O
Ca Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
Ca FluoriteCaF2
Ca Perbøeite-(Ce)(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
Ca Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Ca Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
FeIron
Fe Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Fe Perbøeite-(Ce)(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
Fe PyriteFeS2
Fe Epidote{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Fe Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
YYttrium
Y Fluorite (var: Yttrofluorite)(Ca1-xYx)F2+x where 0.05< x <0.3
LaLanthanum
La Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
CeCerium
Ce Fluorbritholite-(Ce)(Ce,Ca)5(SiO4)3F
Ce Allanite-(Ce){CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Ce Bastnäsite-(Ce)Ce(CO3)F
Ce Törnebohmite-(Ce)(Ce,La)2Al(SiO4)2(OH)
Ce Perbøeite-(Ce)(CaCe3)(Al3Fe2+)(Si2O7)(SiO4)3O(OH)2
Ce Cerite-(Ce)(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
UUranium
U UraniniteUO2
U UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
U Uranophane-βCa(UO2)2(SiO3OH)2 · 5H2O

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Precambrian
541 - 4000 Ma



ID: 2214086
Pegmatite

Age: Precambrian (541 - 4000 Ma)

Description: Coarse-grained pegmatite which forms concordant to irregular discordant tabular or dike-like bodies that are mostly unzoned. Composed of feldspar, quartz, muscovite, and minor biotite. May be related in age to the Boulder Creek Granodiorite and to the Si

Reference: Colton, Roger B. Geologic Map of the Boulder-Fort Collins-Greeley area, Colorado . U.S. Geological Survey Geologic Investigations Series I-855-G. [37]

Mesoproterozoic
1000 - 1600 Ma



ID: 2912356
Granitic rocks of 1400-m.y. age group

Age: Mesoproterozoic (1000 - 1600 Ma)

Stratigraphic Name: Silver Plume Granite; Sherman Granite; Cripple Creek Granite; St. Kevin Granite; Vernal Mesa Granite; Curecanti Granite; Eolus Granite; Trimble Granite

Description: Includes Silver Plume, Sherman, Cripple Creek, St. Kevin, Vernal Mesa, Curecanti, Eolus, and Trimble Granites or Quartz Monzonites; also, San Isabel Granite of Boyer (1962) and unnamed granitic rocks

Comments: Original map source: Green, G.N., 1992, The Digital Geologic Map of Colorado in ARC/INFO Format: U.S. Geological Survey Open-File Report 92-0507, 9 p., scale 1:500,000.

Lithology: Major:{alkali feldspar granite,granite}, Minor:{quartz monzonite}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Paleoproterozoic
1600 - 2500 Ma



ID: 3186950
Paleoproterozoic crystalline metamorphic rocks

Age: Proterozoic (1600 - 2500 Ma)

Lithology: Orthogneiss/paragneiss

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Goddard, E.N. and Glass, J.J. (1940): Deposits of radioactive cerite near Jamestown, Colorado. American Mineralogist. 25,381-404
Stern, C., Allaz, J., Raschke, M., Cortes, S. and Persson, P. (2013): Proterozoic fluorbritholite-bearing REE-Rich hydrothermal veins from near Jamestown, Colorado. Rocky Mountain Section - 65th Annual Meeting (15-17 May 2013). Geological Society of America Abstracts with Programs. Vol. 45, No. 5, p.41

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