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Gabbro contact zone, Neihart Mining District (Montana Mining District), Cascade County, Montana, USAi
Regional Level Types
Gabbro contact zoneZone
Neihart Mining District (Montana Mining District)Mining District
Cascade CountyCounty
MontanaState
USACountry

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Latitude & Longitude (WGS84):
46° North , 110° West (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~15km
GRN:
N32W55
Type:
Zone
KΓΆppen climate type:
BSk : Cold semi-arid (steppe) climate
Mindat Locality ID:
240679
Long-form identifier:
mindat:1:2:240679:7
GUID (UUID V4):
a6077722-c9ea-4ce1-87d9-6feda544fe9c


Contact zone where gabbro intruded limestone, exposed in a roadcut 16 km south of Neihart.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


9 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜ Calcite
Formula: CaCO3
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ Merwinite
Formula: Ca3Mg(SiO4)2
β“˜ Prehnite
Formula: Ca2Al2Si3O10(OH)2
β“˜ Scawtite
Formula: Ca7(Si3O9)2CO3 · 2H2O
Description: only as microscopic lath-like grains in a thin section of contact zone material.
β“˜ 'Thomsonite Subgroup'
β“˜ Titanite
Formula: CaTi(SiO4)O
β“˜ Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
β“˜ Wollastonite
Formula: Ca3(Si3O9)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
Group 9 - Silicates
β“˜Merwinite9.AD.15Ca3Mg(SiO4)2
β“˜Titanite9.AG.15CaTi(SiO4)O
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Vesuvianite9.BG.35Ca19Fe3+Al4(Al6Mg2)(β—»4)β—»[Si2O7]4[(SiO4)10]O(OH)9
β“˜Scawtite9.CK.15Ca7(Si3O9)2CO3 Β· 2H2O
β“˜Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜Wollastonite9.DG.05Ca3(Si3O9)
β“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Unclassified
β“˜'Thomsonite Subgroup'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ PrehniteCa2Al2Si3O10(OH)2
Hβ“˜ ScawtiteCa7(Si3O9)2CO3 · 2H2O
Hβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ ScawtiteCa7(Si3O9)2CO3 · 2H2O
OOxygen
Oβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oβ“˜ CalciteCaCO3
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ MerwiniteCa3Mg(SiO4)2
Oβ“˜ PrehniteCa2Al2Si3O10(OH)2
Oβ“˜ ScawtiteCa7(Si3O9)2CO3 · 2H2O
Oβ“˜ TitaniteCaTi(SiO4)O
Oβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Oβ“˜ WollastoniteCa3(Si3O9)
MgMagnesium
Mgβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgβ“˜ MerwiniteCa3Mg(SiO4)2
Mgβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
AlAluminium
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ PrehniteCa2Al2Si3O10(OH)2
Alβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
SiSilicon
Siβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ MerwiniteCa3Mg(SiO4)2
Siβ“˜ PrehniteCa2Al2Si3O10(OH)2
Siβ“˜ ScawtiteCa7(Si3O9)2CO3 · 2H2O
Siβ“˜ TitaniteCaTi(SiO4)O
Siβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Siβ“˜ WollastoniteCa3(Si3O9)
CaCalcium
Caβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caβ“˜ CalciteCaCO3
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ MerwiniteCa3Mg(SiO4)2
Caβ“˜ PrehniteCa2Al2Si3O10(OH)2
Caβ“˜ ScawtiteCa7(Si3O9)2CO3 · 2H2O
Caβ“˜ TitaniteCaTi(SiO4)O
Caβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Caβ“˜ WollastoniteCa3(Si3O9)
TiTitanium
Tiβ“˜ TitaniteCaTi(SiO4)O
FeIron
Feβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

Taylor, James H. (1935) A contact metamorphic zone from the Little Belt Mountains, Montana. American Mineralogist, 20 (2) 120-128
Murdoch, Joseph (1955) Scawtite from Crestmore, California. American Mineralogist: 40: 505-509 (referring to Taylor, 1935).
Gobla, Michael J. (2012) Montana Mineral Locality Index. Rocks & Minerals, 87 (3) 208-240 doi:10.1080/00357529.2012.676825
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