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Unnamed skarn deposit, Christmas Mts, Brewster Co., Texas, USAi
Regional Level Types
Unnamed skarn depositDeposit
Christmas MtsMountain Range
Brewster Co.County
TexasState
USACountry

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Key
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Latitude & Longitude (WGS84):
29° North , 103° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~7km
Locality type:
Köppen climate type:


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Regions containing this locality

North America PlateTectonic Plate

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Standard Detailed Strunz Dana Chemical Elements

Mineral List


13 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Detailed Mineral List:

Bredigite
Formula: Ca7Mg(SiO4)4
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Grossular
Formula: Ca3Al2(SiO4)3
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Kilchoanite
Formula: Ca6(SiO4)(Si3O10)
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Larnite
Formula: Ca2SiO4
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: Rocks & Minerals (1991): 66:3: 196-224.
'Melilite Group'
Formula: Ca2M(XSiO7)
Reference: Rocks & Minerals (1991): 66:3: 196-224.; American Mineralogist: 59: 694-699.
Merwinite
Formula: Ca3Mg(SiO4)2
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Monticellite
Formula: CaMgSiO4
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Perovskite
Formula: CaTiO3
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Rankinite
Formula: Ca3Si2O7
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Spurrite
Formula: Ca5(SiO4)2(CO3)
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Tilleyite
Formula: Ca5(Si2O7)(CO3)2
Reference: Rocks & Minerals (1991): 66:3: 196-224.
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Reference: Rocks & Minerals: 66(3): 196-224; American Mineralogist: 59: 694-699.
Wollastonite
Formula: CaSiO3
Reference: Rocks & Minerals (1991): 66:3: 196-224.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Magnetite4.BB.05Fe2+Fe3+2O4
Perovskite4.CC.30CaTiO3
Group 9 - Silicates
Bredigite9.AD.20Ca7Mg(SiO4)4
Grossular9.AD.25Ca3Al2(SiO4)3
Kilchoanite9.BJ.45Ca6(SiO4)(Si3O10)
Larnite9.AD.05Ca2SiO4
Merwinite9.AD.15Ca3Mg(SiO4)2
Monticellite9.AC.10CaMgSiO4
Rankinite9.BC.15Ca3Si2O7
Spurrite9.AH.15Ca5(SiO4)2(CO3)
Tilleyite9.BE.82Ca5(Si2O7)(CO3)2
Vesuvianite9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Wollastonite9.DG.05CaSiO3
Unclassified Minerals, Rocks, etc.
'Melilite Group'-Ca2M(XSiO7)

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Perovskite4.3.3.1CaTiO3
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Monticellite51.3.2.1CaMgSiO4
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Bredigite51.4.1.1Ca7Mg(SiO4)4
Grossular51.4.3b.2Ca3Al2(SiO4)3
Merwinite51.4.2.1Ca3Mg(SiO4)2
Insular SiO4 Groups Only with cations in >[6] coordination
Larnite51.5.1.1Ca2SiO4
Group 53 - NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
Insular SiO4 Groups and Other Anions of Complex Cations with (CO3)
Spurrite53.1.1.1Ca5(SiO4)2(CO3)
Group 55 - SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
Si2O7 Groups, Generally with no Additional Anions with cations in [7] coordination
Rankinite55.3.1.1Ca3Si2O7
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] and/or >[4] coordination
Tilleyite56.2.9.1Ca5(Si2O7)(CO3)2
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)
Vesuvianite58.2.4.1(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Insular, Mixed, Single, and Larger Tetrahedral Groups with insular single and triple groups (n=1, 3)
Kilchoanite58.3.2.1Ca6(SiO4)(Si3O10)
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=3
Wollastonite65.2.1.1cCaSiO3
Unclassified Minerals, Mixtures, etc.
'Melilite Group'-Ca2M(XSiO7)

List of minerals for each chemical element

HHydrogen
H Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
BBoron
B Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
CCarbon
C SpurriteCa5(SiO4)2(CO3)
C TilleyiteCa5(Si2O7)(CO3)2
OOxygen
O BredigiteCa7Mg(SiO4)4
O GrossularCa3Al2(SiO4)3
O KilchoaniteCa6(SiO4)(Si3O10)
O LarniteCa2SiO4
O MagnetiteFe2+Fe23+O4
O Melilite GroupCa2M(XSiO7)
O MonticelliteCaMgSiO4
O PerovskiteCaTiO3
O RankiniteCa3Si2O7
O SpurriteCa5(SiO4)2(CO3)
O TilleyiteCa5(Si2O7)(CO3)2
O Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
O WollastoniteCaSiO3
O MerwiniteCa3Mg(SiO4)2
FFluorine
F Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
NaSodium
Na Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
MgMagnesium
Mg BredigiteCa7Mg(SiO4)4
Mg MonticelliteCaMgSiO4
Mg Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Mg MerwiniteCa3Mg(SiO4)2
AlAluminium
Al GrossularCa3Al2(SiO4)3
Al Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
SiSilicon
Si BredigiteCa7Mg(SiO4)4
Si GrossularCa3Al2(SiO4)3
Si KilchoaniteCa6(SiO4)(Si3O10)
Si LarniteCa2SiO4
Si Melilite GroupCa2M(XSiO7)
Si MonticelliteCaMgSiO4
Si RankiniteCa3Si2O7
Si SpurriteCa5(SiO4)2(CO3)
Si TilleyiteCa5(Si2O7)(CO3)2
Si Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Si WollastoniteCaSiO3
Si MerwiniteCa3Mg(SiO4)2
CaCalcium
Ca BredigiteCa7Mg(SiO4)4
Ca GrossularCa3Al2(SiO4)3
Ca KilchoaniteCa6(SiO4)(Si3O10)
Ca LarniteCa2SiO4
Ca Melilite GroupCa2M(XSiO7)
Ca MonticelliteCaMgSiO4
Ca PerovskiteCaTiO3
Ca RankiniteCa3Si2O7
Ca SpurriteCa5(SiO4)2(CO3)
Ca TilleyiteCa5(Si2O7)(CO3)2
Ca Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Ca WollastoniteCaSiO3
Ca MerwiniteCa3Mg(SiO4)2
TiTitanium
Ti PerovskiteCaTiO3
FeIron
Fe MagnetiteFe2+Fe23+O4
Fe Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
BaBarium
Ba BredigiteCa7Mg(SiO4)4

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Joesten, R. (1974) Pseudomorphic replacement of melilite by idocrase in a zoned calc-silicate skarn. Christmas Mountains, Big Bend Region, Texas. American Mineralogist: 5: 694-699.
Rocks & Minerals (1991): 66(3): 196-224.


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