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Delmoe Road skarn, Delmoe Lake Road occurrences, Pipestone District, Jefferson Co., Montana, USAi
Regional Level Types
Delmoe Road skarnSkarn
Delmoe Lake Road occurrencesGroup of Occurrences
Pipestone DistrictMining District
Jefferson Co.County
MontanaState
USACountry

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Key
Lock Map
Latitude & Longitude (WGS84): 45° 55' 8'' North , 112° 16' 10'' West
Latitude & Longitude (decimal): 45.91902,-112.26950
GeoHash:G#: c80jjprce
Locality type:Skarn
Köppen climate type:BSk : Cold semi-arid (steppe) climate


A calc-silicate skarn in metasedimentary rocks that form a screen between the Butte Pluton and Rader Creek Pluton of the Boulder Batholith.

Regions containing this locality

Rocky Mountains, North America

Mountain Range - 2,070 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


4 valid minerals.

Detailed Mineral List:

Grossular
Formula: Ca3Al2(SiO4)3
Reference: Gibson, R.I., 2017, Geology and mineralogy of the eastern margin of the Butte Pluton, Montana: Proceedings, Montana Mining and Mineral Symposium 2017, Montana Bureau of Mines and Geology, in press.
Meionite
Formula: Ca4Al6Si6O24CO3
Reference: Gibson, R.I., 2017, Geology and mineralogy of the eastern margin of the Butte Pluton, Montana: Proceedings, Montana Mining and Mineral Symposium 2017, Montana Bureau of Mines and Geology, in press.
'Stilbite subgroup'
Reference: Gibson, R.I., 2017, Geology and mineralogy of the eastern margin of the Butte Pluton, Montana: Proceedings, Montana Mining and Mineral Symposium 2017, Montana Bureau of Mines and Geology, in press.
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Reference: Gibson, R.I., 2017, Geology and mineralogy of the eastern margin of the Butte Pluton, Montana: Proceedings, Montana Mining and Mineral Symposium 2017, Montana Bureau of Mines and Geology, in press.
Zoisite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: Gibson, R.I., 2017, Geology and mineralogy of the eastern margin of the Butte Pluton, Montana: Proceedings, Montana Mining and Mineral Symposium 2017, Montana Bureau of Mines and Geology, in press.
Zoisite var: Thulite
Formula: {Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Reference: Gibson, R.I., 2017, Geology and mineralogy of the eastern margin of the Butte Pluton, Montana: Proceedings, Montana Mining and Mineral Symposium 2017, Montana Bureau of Mines and Geology, in press.

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
'Grossular'9.AD.25Ca3Al2(SiO4)3
'Meionite'9.FB.15Ca4Al6Si6O24CO3
Vesuvianite9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Zoisite9.BG.10{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
var: Thulite9.BG.10{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
'Stilbite subgroup'-

List of minerals arranged by Dana 8th Edition classification

Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Grossular51.4.3b.2Ca3Al2(SiO4)3
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
Zoisite58.2.1b.1{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Unclassified Minerals, Rocks, etc.
Meionite-Ca4Al6Si6O24CO3
'Stilbite subgroup'-
Zoisite
var: Thulite
-{Ca2}{Al3}(Si2O7)(SiO4)O(OH)

List of minerals for each chemical element

HHydrogen
H Zoisite (var: Thulite){Ca2}{Al3}(Si2O7)(SiO4)O(OH)
H Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
H Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
BBoron
B Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
CCarbon
C MeioniteCa4Al6Si6O24CO3
OOxygen
O GrossularCa3Al2(SiO4)3
O MeioniteCa4Al6Si6O24CO3
O Zoisite (var: Thulite){Ca2}{Al3}(Si2O7)(SiO4)O(OH)
O Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
O Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
FFluorine
F Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
NaSodium
Na MeioniteCa4Al6Si6O24CO3
Na Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
MgMagnesium
Mg Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
AlAluminium
Al GrossularCa3Al2(SiO4)3
Al MeioniteCa4Al6Si6O24CO3
Al Zoisite (var: Thulite){Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Al Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Al Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
SiSilicon
Si GrossularCa3Al2(SiO4)3
Si MeioniteCa4Al6Si6O24CO3
Si Zoisite (var: Thulite){Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Si Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Si Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
SSulfur
S MeioniteCa4Al6Si6O24CO3
ClChlorine
Cl MeioniteCa4Al6Si6O24CO3
CaCalcium
Ca GrossularCa3Al2(SiO4)3
Ca MeioniteCa4Al6Si6O24CO3
Ca Zoisite (var: Thulite){Ca2}{Al3}(Si2O7)(SiO4)O(OH)
Ca Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Ca Zoisite{Ca2}{Al3}(Si2O7)(SiO4)O(OH)
FeIron
Fe Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Early Tertiary
33.9 - 66 Ma



ID: 3187686
Cenozoic volcanic rocks

Age: Paleogene (33.9 - 66 Ma)

Lithology: Volcanic rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Cretaceous
66 - 145 Ma



ID: 2114069
Monzogranite in the Anaconda Range and the Boulder batholith

Age: Cretaceous (66 - 145 Ma)

Lithology: Major:: {monzogranite}

Reference: Zientek, M.L., P.D. Derkey, R.J. Miller, J.D. Causet et al. Spatial Databases for the Geology of the Northern Rocky Mountains - Idaho, Montana, and Washington. U.S. Geological Survey Open-File Report 2005-1235 Version 1.0. [25]

Cretaceous
66 - 145 Ma



ID: 2984479
Granitic rock

Age: Cretaceous (66 - 145 Ma)

Comments: Original map source: Vuke, S.M., Porter, K.W., Lonn, J.D., and Lopez, D.A., 2007, Geologic Map of Montana - Compact Disc: Montana Bureau of Mines and Geology: Geologic Map 62-C, 73 p., 2 sheets, scale 1:500,000. This map was digitized in 2012 as a result of a contract betwe

Lithology: Major:{granitic}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Gibson, R.I. (2018), Geology and mineralogy of the eastern margin of the Butte Pluton, Montana, in Scarberry, K.C., and Barth, S., 2018, Proceedings of the Montana Mining and Mineral Symposium 2017, technical papers and abstracts: Montana Bureau of Mines and Geology Open-File Report 699.


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