Iron Pass Mining District, Millard County, Utah, USAi
Regional Level Types | |
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Iron Pass Mining District | Mining District |
Millard County | County |
Utah | State |
USA | Country |
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Type:
Mindat Locality ID:
284554
Long-form identifier:
mindat:1:2:284554:1
GUID (UUID V4):
396854b9-c9e5-4bef-b3e1-f27ebabfacf6
The Iron Pass mining district is in south-central Millard County about 18 mi northwest of Milford. Bullock (1970) estimates that a few tons of Fe ore have been shipped based on the mine workings in the district.
The Iron Pass district lies in the northern San Francisco Mountains of the Basin and Range Province. The prospects and mine workings are primarily along a gravel road through Iron Mine Pass. Most of the Fe workings are south of the pass and are referred to as the Iron Pass mine (NE1⁄4NE1⁄4 section 23 and NW1⁄4NW1⁄4 section 24, T. 25 S., R. 12 W.). These shallow prospects consist of a series of short inclined shafts, adits, dozer cuts, and a small open cut. The workings all follow minor normal faults cutting Neoproterozoic metasedimentary strata including Black Rock Canyon Limestone and Caddy Canyon Quartzite. Mineralization is generally localized at fault contacts between brown dolomitic limestone and gray quartzite or purplish gray argillite. Mineralization occurs as scattered, narrow 0.5- to 4-ft-wide, massive hematite or goethite pods developed along the faults, fractures, or as thin replacements of favorable carbonate beds. Mineralization includes some Mn (Bullock, 1970). Bullock (1970) reports two samples from these workings average 53.8% Fe and 2.52% Mn. The district also has a couple of smaller, less well described prospects north of the pass.
The Iron Pass district lies in the northern San Francisco Mountains of the Basin and Range Province. The prospects and mine workings are primarily along a gravel road through Iron Mine Pass. Most of the Fe workings are south of the pass and are referred to as the Iron Pass mine (NE1⁄4NE1⁄4 section 23 and NW1⁄4NW1⁄4 section 24, T. 25 S., R. 12 W.). These shallow prospects consist of a series of short inclined shafts, adits, dozer cuts, and a small open cut. The workings all follow minor normal faults cutting Neoproterozoic metasedimentary strata including Black Rock Canyon Limestone and Caddy Canyon Quartzite. Mineralization is generally localized at fault contacts between brown dolomitic limestone and gray quartzite or purplish gray argillite. Mineralization occurs as scattered, narrow 0.5- to 4-ft-wide, massive hematite or goethite pods developed along the faults, fractures, or as thin replacements of favorable carbonate beds. Mineralization includes some Mn (Bullock, 1970). Bullock (1970) reports two samples from these workings average 53.8% Fe and 2.52% Mn. The district also has a couple of smaller, less well described prospects north of the pass.
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Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded from this region.Mineral List
Mineral list contains entries from the region specified including sub-localities2 valid minerals.
Rock Types Recorded
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Alphabetical List Tree DiagramDetailed Mineral List:
ⓘ Goethite Formula: α-Fe3+O(OH) |
ⓘ Hematite Formula: Fe2O3 |
ⓘ 'Limonite' Localities: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides | |||
---|---|---|---|
ⓘ | Goethite | 4.00. | α-Fe3+O(OH) |
ⓘ | Hematite | 4.CB.05 | Fe2O3 |
Unclassified | |||
ⓘ | 'Limonite' | - |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Goethite | α-Fe3+O(OH) |
O | Oxygen | |
O | ⓘ Goethite | α-Fe3+O(OH) |
O | ⓘ Hematite | Fe2O3 |
Fe | Iron | |
Fe | ⓘ Goethite | α-Fe3+O(OH) |
Fe | ⓘ Hematite | Fe2O3 |
Fossils
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- Utah
- Millard County
- Iron Pass Mining District
- Millard County
Other Regions, Features and Areas that Intersect
North America PlateTectonic Plate
- Basin and Range BasinsBasin
- Mojave DomainDomain
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