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⇱ Lost Shaft Prospect, Natural Bridge Mining District, Sweet Grass County, Montana, USA

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Lost Shaft Prospect, Natural Bridge Mining District, Sweet Grass County, Montana, USAi
Regional Level Types
Lost Shaft ProspectProspect
Natural Bridge Mining DistrictMining District
Sweet Grass CountyCounty
MontanaState
USACountry

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Latitude & Longitude (WGS84):
45° 28' 30'' North , 110° 11' 57'' West
Latitude & Longitude (decimal):
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Livingston7,302 (2017)35.0km
Pray681 (2011)39.1km
Big Timber1,648 (2017)44.3km
Greycliff112 (2011)45.4km
Clyde Park309 (2017)55.5km
Mindat Locality ID:
162943
Long-form identifier:
mindat:1:2:162943:2
GUID (UUID V4):
0


1925 DIREXPL USF
Commodities (Major) - Chromium
Deposit Type: Vein
Development Status: Prospect
Host Rock: Pyroxenite

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


1 valid mineral.

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

Entries shown in red are rocks recorded for this region.

Detailed Mineral List:

ⓘ Chromite
Formula: Fe2+Cr3+2O4

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4

List of minerals for each chemical element

OOxygen
Oⓘ ChromiteFe2+Cr23+O4
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
FeIron
Feⓘ ChromiteFe2+Cr23+O4

Other Databases

Link to USGS MRDS:10022833

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

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To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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