Jamestown, Jamestown District, Boulder Co., Colorado, USA

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Detailed Mineral List:

Aikinite
Formula:	PbCuBiS3
Locality:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA
Allanite-(Ce)
Formula:	{CaCe}{Al2Fe2+}(Si2O7)(SiO4)O(OH)
Reference:	Pavel M. Kartashov analytical data (2011)
Photo: © Pavel M. Kartashov. Allanite-(Ce) from Jamestown, Jamestown District, Boulder Co., Colorado, USA
Ankerite
Formula:	Ca(Fe2+,Mg)(CO3)2
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Bastnäsite-(Ce)
Formula:	(Ce,La)(CO3)F
Reference:	Goddart, E.N and Jewell,J.G AM25 p381
β-Uranophane
Formula:	Ca(UO2)2(HSiO4)2 · 5H2O
Reference:	Pavel M. Kartashov analytical data (2011)
Photo: © Pavel M. Kartashov. β-Uranophane from Jamestown, Jamestown District, Boulder Co., Colorado, USA
Buckhornite (TL)
Formula:	AuPb2BiTe2S3
Type Locality:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA
Reference:	Minerals of Colorado (1997) Eckels, E. B.
Calaverite
Formula:	AuTe2
Locality:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA
Cerite-(Ce)
Formula:	(Ce,Ca)9(Mg,Fe)(SiO4)3(HSiO4)4(OH)3
Reference:	Pearl, 1958. Colorado Gem Trails & Mineral Guide Hanson,R.A. & Pearce,D.W AM26 p110-120 http://www.handbookofmineralogy.org/pdfs/ceritece.pdf
Chalcopyrite
Formula:	CuFeS2
Reference:	Goddart, E.N and Jewell,J.G AM25 p381
Localities:	Recorded from at least 2 other localities in this region.
Photo: © John Sobolewski. Chalcopyrite from Alice Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
'Chlorite Group'
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Coffinite
Formula:	(U4+,Th)(SiO4)1-x(OH)4x
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Covellite
Formula:	CuS
Locality:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA
Epidote
Formula:	{Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)
Reference:	Goddart, E.N and Jewell,J.G AM25 p381
Ferberite
Formula:	FeWO4
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Fluorbritholite-(Ce)
Formula:	Ca2(Ce,Ca)3(SiO4,PO4)3(F,OH)
Reference:	Pavel M. Kartashov analytical data (2011)
Photo: © Pavel M. Kartashov. Fluorbritholite-(Ce) from Jamestown, Jamestown District, Boulder Co., Colorado, USA
Fluorite
Formula:	CaF2
Reference:	Pearl, 1958. Colorado Gem Trails & Mineral Guide
Localities:	Recorded from at least 3 other localities in this region.
Fluorite var: Yttrofluorite
Formula:	(Ca1-xYx)F2+x where 0.05< x <0.3
Reference:	Pavel M. Kartashov analytical data (2011)
Freibergite
Formula:	(Ag4+2xCu2-2x)[(Cu, Ag)4(Fe, Zn)2]Sb4S12S1-x (0 < x < 1)
Locality:	Alice Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Galena
Formula:	PbS
Localities:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA Alice Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Galena var: Argentiferous Galena
Locality:	Alice Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Gold
Formula:	Au
Locality:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA
Limonite
Formula:	FeO(OH) · nH2O
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Monazite-(Ce)
Formula:	(Ce,La,Nd,Th)(PO4)
Reference:	Goddart, E.N and Jewell,J.G AM25 p381
Muscovite var: Sericite
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Orthoclase
Formula:	KAlSi3O8
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Pyrite
Formula:	FeS2
Reference:	Goddart, E.N and Jewell,J.G AM25 p381
Localities:	Recorded from at least 3 other localities in this region.
Quartz
Formula:	SiO2
Localities:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA Alice Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA
Quartz var: Chalcedony
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Sphalerite
Formula:	ZnS
Localities:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Sylvanite
Formula:	(Au,Ag)2Te4
Localities:	Wano Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA Alice Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Tellurium
Formula:	Te
Localities:	Wano Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA Alice Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Tennantite
Formula:	(Cu,Ag,Fe,Zn)12As4S13
Localities:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA Alice Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Tetradymite
Formula:	Bi2Te2S
Locality:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA
Tetrahedrite
Formula:	(Cu,Fe,Ag,Zn)12Sb4S13
Locality:	Buckhorn Mine (Bigthing), Jamestown, Jamestown District, Boulder Co., Colorado, USA
Thorite var: Uranothorite
Formula:	(Th,U)SiO4
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Thorogummite
Formula:	(Th,U)(SiO4)1-x(OH)4x
Locality:	Blue Jay Mine, Jamestown, Jamestown District, Boulder Co., Colorado, USA
Törnebohmite-(Ce)
Formula:	(Ce,La)2Al(SiO4)2(OH)
Reference:	Goddart, E.N and Jewell,J.G AM25 p381
Photo: © Rob Lavinsky. Törnebohmite-(Ce) from Jamestown, Jamestown District, Boulder Co., Colorado, USA
Uraninite
Formula:	UO2
Reference:	Goddart, E.N and Jewell,J.G AM25 p381
Localities:	Recorded from at least 1 other locality in this region.
Uranophane
Formula:	Ca(UO2)2[HSiO4]2 · 5H2O
Reference:	Pavel M. Kartashov analytical data (2011)
Photo: © Pavel M. Kartashov. Uranophane from Jamestown, Jamestown District, Boulder Co., Colorado, USA

39 entries listed. 30 valid minerals. 1 type locality (valid mineral). 1 erroneous literature entry.

References