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Blodgett Mine (Blodgett prospect), Engesser Pass, Tank Mountains Mining District, Tank Mountains, Yuma County, Arizona, USAi
Regional Level Types
Blodgett Mine (Blodgett prospect)Mine
Engesser PassPass
Tank Mountains Mining DistrictMining District
Tank MountainsMountain Range
Yuma CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
33° 12' 56'' North , 113° 48' 49'' West
Latitude & Longitude (decimal):
Type:
KΓΆppen climate type:
Nearest Settlements:
PlacePopulationDistance
Brenda676 (2011)53.0km
Dateland416 (2011)53.1km
La Paz Valley699 (2011)56.5km
Quartzsite3,626 (2017)63.0km
Mindat Locality ID:
44355
Long-form identifier:
mindat:1:2:44355:4
GUID (UUID V4):
39135914-e075-4ca3-b48a-efa46b25342a


A surface Au-Cu prospect located in the center NΒ½ sec. 33, T2S, R15W, on federal land. (Engesser Pass 15 minute topo map), 2 miles E of the Engessor Mine, in the NW Tank Mountains.

Mineralization is a small area of fissured granitic rock that emerges from beneath the lavas that make up the surrounding, rugged mass of the range. Ore is in narrow quartz-carbonate veins/stringers. Vein walls somewhat sericitized and silicified. The ore zone is 1.22 meters wide. Ore control was quartz-carbonate stringers in fine-grained granite. Tectonic influences include block faulting. Associated rock unit is the Kofa volcanics.

The granite has been deeply decayed so that its exposures now consist of quartz, chlorite, and kaolinized feldspar. The quartz, which is of yellowish-white colour, is locally honeycombed and contains many small bunches of brown to black iron oxide.

Workings comprise two shafts at 15 and 30 feet (9.14 meters) deep; and a shallow cut. No production record.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


7 valid minerals.

Detailed Mineral List:

β“˜ 'Chlorite Group'
β“˜ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Description: Numerous small bunches in wall rock.
β“˜ Gold
Formula: Au
Description: A few colors obtainable upon panning.
β“˜ Hematite
Formula: Fe2O3
Description: Numerous small bunches in wall rock.
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
Description: Numerous small bunches in wall rock.
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Description: In altered wall rocks.
β“˜ Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Description: In altered wall rocks.
β“˜ Quartz
Formula: SiO2
Colour: Yellowish-white
Description: Locally honeycombed.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
β“˜Hematite4.CB.05Fe2O3
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 9 - Silicates
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
β“˜Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 Β· nH2O, x < 1
Unclassified
β“˜'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hβ“˜ KaoliniteAl2(Si2O5)(OH)4
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CCarbon
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oβ“˜ HematiteFe2O3
Oβ“˜ KaoliniteAl2(Si2O5)(OH)4
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
AlAluminium
Alβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alβ“˜ KaoliniteAl2(Si2O5)(OH)4
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siβ“˜ KaoliniteAl2(Si2O5)(OH)4
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
KPotassium
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
FeIron
Feβ“˜ HematiteFe2O3
CuCopper
Cuβ“˜ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuβ“˜ MalachiteCu2(CO3)(OH)2
AuGold
Auβ“˜ GoldAu

Other Databases

Link to USGS MRDS:10027205

Other Regions, Features and Areas containing this locality

North America
North America PlateTectonic Plate
USA

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.

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