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San Juan Mts, Colorado, USAi
Regional Level Types
San Juan MtsMountain Range
ColoradoState
USACountry

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Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude: 38° North , 105° West (est.)
Margin of Error:~380km
Locality type:Mountain Range


The San Juan Mountains are mostly co-extensive with the San Juan Volcanic field, a large area in southwestern Colorado, roughly triangular in shape, that includes many metal mining areas but also the zeolite producing outcrops west of Wolf Creek Pass. The San Juan Mountains are mostly developed on a huge pile of volcanic rocks including flows, welded tuffs, lahar, etc. that were erupted from many large caldera structures that are scattered throughout the region. Some of the calderas occur in clusters, overlapping or nested within larger structures. The San Juans generally extend from just west of Telluride, near the northwest corner, to the Bonanza area at the northeast corner and then south-southeast past Creede, Platoro and Wolf Creek Pass ending a short distance into New Mexico.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


12 valid minerals.

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: [MinRec 10:358]
'Albite-Anorthite Series'
Reference: Minerals of Colorado (1997) E.B. Eckel
'Amphibole Supergroup'
Formula: AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Reference: Minerals of Colorado (1997) Eckel, E. B.
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Minerals of Colorado (1997) E.B. Eckel
Baryte
Formula: BaSO4
Reference: [www.johnbetts-fineminerals.com]
'Biotite'
Reference: Minerals of Colorado (1997) Eckel, E. B.
Cristobalite
Formula: SiO2
Reference: Minerals of Colorado (1997) Eckel, E. B.
Diopside
Formula: CaMgSi2O6
Reference: Minerals of Colorado (1997) Eckel, E. B.
'Fayalite-Forsterite Series'
Reference: Minerals of Colorado (1997) E.B. Eckel
'Hornblende'
Reference: Minerals of Colorado (1997) Eckel, E. B.
'Hypersthene'
Formula: (Mg,Fe)SiO3
Reference: Minerals of Colorado (1997) Eckel, E. B.
'Iddingsite'
Formula: MgO · Fe2O3 · 3SiO2·4H2O
Reference: Minerals of Colorado (1997) E.B. Eckel
Piemontite
Formula: {Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Reference: Minerals of Colorado (1997) E.B. Eckel
Pigeonite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: Minerals of Colorado (1997) Eckel, E. B.
Platinum
Formula: Pt
Reference: [MinRec 10:359]
Pyrite
Formula: FeS2
Reference: [www.johnbetts-fineminerals.com]
Quartz
Formula: SiO2
Reference: Minerals of Colorado (1997) Eckel, E. B.
Sanidine
Formula: K(AlSi3O8)
Reference: Minerals of Colorado (1997) E.B. Eckel
'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Reference: Minerals of Colorado (1997) E.B. Eckel
Tridymite
Formula: SiO2
Reference: Minerals of Colorado (1997) Eckel, E. B.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Platinum1.AF.10Pt
Group 2 - Sulphides and Sulfosalts
Acanthite2.BA.35Ag2S
Pyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
Cristobalite4.DA.15SiO2
Quartz4.DA.05SiO2
Tridymite4.DA.10SiO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Group 9 - Silicates
Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside9.DA.15CaMgSi2O6
Piemontite9.BG.05a{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Pigeonite9.DA.10(CaxMgyFez)(Mgy1Fez1)Si2O6
Sanidine9.FA.30K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Biotite'-
'Fayalite-Forsterite Series'-
'Hornblende'-
'Hypersthene'-(Mg,Fe)SiO3
'Iddingsite'-MgO · Fe2O3 · 3SiO2·4H2O
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Platinum Group Metals and Alloys
Platinum1.2.1.1Pt
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
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)
Piemontite58.2.1a.11{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside65.1.3a.1CaMgSi2O6
Pigeonite65.1.1.4(CaxMgyFez)(Mgy1Fez1)Si2O6
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Cristobalite75.1.1.1SiO2
Quartz75.1.3.1SiO2
Tridymite75.1.2.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
Sanidine76.1.1.2K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
'Albite-Anorthite Series'-
'Amphibole Supergroup'-AX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
'Biotite'-
'Fayalite-Forsterite Series'-
'Hornblende'-
'Hypersthene'-(Mg,Fe)SiO3
'Iddingsite'-MgO · Fe2O3 · 3SiO2·4H2O
'Serpentine Subgroup'-D3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn

List of minerals for each chemical element

HHydrogen
H Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
H Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
H IddingsiteMgO · Fe2O3 · 3SiO2·4H2O
H Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
OOxygen
O BaryteBaSO4
O Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
O CristobaliteSiO2
O TridymiteSiO2
O DiopsideCaMgSi2O6
O Hypersthene(Mg,Fe)SiO3
O Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
O QuartzSiO2
O Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
O IddingsiteMgO · Fe2O3 · 3SiO2·4H2O
O Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
O Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
O SanidineK(AlSi3O8)
FFluorine
F Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
MgMagnesium
Mg DiopsideCaMgSi2O6
Mg Hypersthene(Mg,Fe)SiO3
Mg Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mg Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mg IddingsiteMgO · Fe2O3 · 3SiO2·4H2O
Mg Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Al Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Al Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Al Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Al SanidineK(AlSi3O8)
SiSilicon
Si Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Si CristobaliteSiO2
Si TridymiteSiO2
Si DiopsideCaMgSi2O6
Si Hypersthene(Mg,Fe)SiO3
Si Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si QuartzSiO2
Si Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Si IddingsiteMgO · Fe2O3 · 3SiO2·4H2O
Si Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Si Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Si SanidineK(AlSi3O8)
SSulfur
S AcanthiteAg2S
S BaryteBaSO4
S PyriteFeS2
ClChlorine
Cl Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
K SanidineK(AlSi3O8)
CaCalcium
Ca DiopsideCaMgSi2O6
Ca Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Ca Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
Ca Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
TiTitanium
Ti Amphibole SupergroupAX2Z5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
MnManganese
Mn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Mn Piemontite{Ca2}{Al2Mn3+}(Si2O7)(SiO4)O(OH)
FeIron
Fe PyriteFeS2
Fe Hypersthene(Mg,Fe)SiO3
Fe Pigeonite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
Fe IddingsiteMgO · Fe2O3 · 3SiO2·4H2O
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
NiNickel
Ni Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
ZnZinc
Zn Serpentine SubgroupD3[Si2O5](OH)4 D= Mg, Fe, Ni, Mn, Al, Zn
AgSilver
Ag AcanthiteAg2S
BaBarium
Ba BaryteBaSO4
PtPlatinum
Pt PlatinumPt

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Burbank, W.S., Luedke, R.G. (1968) Geology and Ore Deposits of the Western San Juan Mountains, Colorado. In: Ridge, J.D., (ed.) Ore Deposits of the United States, 1933-1967. The Graton-Sales Volume: American Institute of Mining, Metallurgical, and Petroleum Engineers, Inc., New York, Volume I, p. 714-733.

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