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Unnamed skarn deposit, Christmas Mountains, Brewster County, Texas, USAi
Regional Level Types
Unnamed skarn depositDeposit
Christmas MountainsMountain Range
Brewster CountyCounty
TexasState
USACountry

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Latitude & Longitude (WGS84):
29° North , 103° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~97km
GRN:
N20W64
Type:
Deposit
Köppen climate type:
BSh : Hot semi-arid (steppe) climate
Mindat Locality ID:
41966
Long-form identifier:
mindat:1:2:41966:3
GUID (UUID V4):
0


Skarn formed between the contact of an alkaline gabbro and limestones.
(U. S. Army Map Service photograph 26777)

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


19 valid minerals.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Augite var. Titanium-bearing Augite
Formula: (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Bredigite
Formula: Ca7Mg(SiO4)4
ⓘ Grossular
Formula: Ca3Al2(SiO4)3
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Kilchoanite
Formula: Ca6(SiO4)(Si3O10)
ⓘ Larnite
Formula: Ca2SiO4
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Melilite Group'
Formula: Ca2M(XSiO7)
ⓘ Merwinite
Formula: Ca3Mg(SiO4)2
ⓘ Monticellite
Formula: CaMg(SiO4)
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ Perovskite
Formula: CaTiO3
ⓘ Rankinite
Formula: Ca3Si2O7
ⓘ Spurrite
Formula: Ca5(SiO4)2(CO3)
ⓘ Tilleyite
Formula: Ca5(Si2O7)(CO3)2
ⓘ Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
ⓘ Wollastonite
Formula: Ca3(Si3O9)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘPerovskite4.CC.30CaTiO3
Group 9 - Silicates
ⓘMonticellite9.AC.10CaMg(SiO4)
ⓘLarnite9.AD.05Ca2SiO4
ⓘMerwinite9.AD.15Ca3Mg(SiO4)2
ⓘBredigite9.AD.20Ca7Mg(SiO4)4
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘGrossular9.AD.25Ca3Al2(SiO4)3
ⓘSpurrite9.AH.15Ca5(SiO4)2(CO3)
ⓘRankinite9.BC.15Ca3Si2O7
ⓘTilleyite9.BE.82Ca5(Si2O7)(CO3)2
ⓘVesuvianite9.BG.35Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
ⓘKilchoanite9.BJ.45Ca6(SiO4)(Si3O10)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘvar. Titanium-bearing Augite9.DA.15(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
ⓘWollastonite9.DG.05Ca3(Si3O9)
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘAnorthite9.FA.35Ca(Al2Si2O8)
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Melilite Group'-Ca2M(XSiO7)

List of minerals for each chemical element

HHydrogen
Hⓘ AnalcimeNa(AlSi2O6) · H2O
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ SpurriteCa5(SiO4)2(CO3)
Cⓘ TilleyiteCa5(Si2O7)(CO3)2
OOxygen
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ BredigiteCa7Mg(SiO4)4
Oⓘ GrossularCa3Al2(SiO4)3
Oⓘ IlmeniteFe2+TiO3
Oⓘ KilchoaniteCa6(SiO4)(Si3O10)
Oⓘ LarniteCa2SiO4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MerwiniteCa3Mg(SiO4)2
Oⓘ MonticelliteCaMg(SiO4)
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ PerovskiteCaTiO3
Oⓘ RankiniteCa3Si2O7
Oⓘ SpurriteCa5(SiO4)2(CO3)
Oⓘ TilleyiteCa5(Si2O7)(CO3)2
Oⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Oⓘ WollastoniteCa3(Si3O9)
Oⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ Melilite GroupCa2M(XSiO7)
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
MgMagnesium
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ BredigiteCa7Mg(SiO4)4
Mgⓘ MerwiniteCa3Mg(SiO4)2
Mgⓘ MonticelliteCaMg(SiO4)
Mgⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Mgⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
AlAluminium
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ GrossularCa3Al2(SiO4)3
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Alⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
SiSilicon
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ BredigiteCa7Mg(SiO4)4
Siⓘ GrossularCa3Al2(SiO4)3
Siⓘ KilchoaniteCa6(SiO4)(Si3O10)
Siⓘ LarniteCa2SiO4
Siⓘ MerwiniteCa3Mg(SiO4)2
Siⓘ MonticelliteCaMg(SiO4)
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ RankiniteCa3Si2O7
Siⓘ SpurriteCa5(SiO4)2(CO3)
Siⓘ TilleyiteCa5(Si2O7)(CO3)2
Siⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Siⓘ WollastoniteCa3(Si3O9)
Siⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Siⓘ Melilite GroupCa2M(XSiO7)
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ NephelineNa3K(Al4Si4O16)
CaCalcium
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ BredigiteCa7Mg(SiO4)4
Caⓘ GrossularCa3Al2(SiO4)3
Caⓘ KilchoaniteCa6(SiO4)(Si3O10)
Caⓘ LarniteCa2SiO4
Caⓘ MerwiniteCa3Mg(SiO4)2
Caⓘ MonticelliteCaMg(SiO4)
Caⓘ PerovskiteCaTiO3
Caⓘ RankiniteCa3Si2O7
Caⓘ SpurriteCa5(SiO4)2(CO3)
Caⓘ TilleyiteCa5(Si2O7)(CO3)2
Caⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Caⓘ WollastoniteCa3(Si3O9)
Caⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Caⓘ Melilite GroupCa2M(XSiO7)
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ PerovskiteCaTiO3
Tiⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
FeIron
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ IlmeniteFe2+TiO3
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Feⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6

Other Regions, Features and Areas containing this locality

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North America PlateTectonic Plate

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References

Joesten, Raymond (1974) Pseudomorphic replacement of melilite by idocrase in a zoned calc-silicate skarn, Christmas Mountains, Big Bend Region, Texas. American Mineralogist, 59 (7-8) 694-699
Joesten, Raymond Leonard (1974) Metasomatism and magmatic assimilation at a gabbro-limestone contact, Christmas Mountains, Big Bend region, Texas. Dissertation (Ph.D.), California Institute of Technology.
Smith, Arthur E. (1991) Texas Mineral Locality Index. Rocks & Minerals, 66 (3) 196-224 doi:10.1080/00357529.1991.11761622
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