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Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USAi
Regional Level Types
Muggins Mining DistrictMining District
Muggins MountainsMountain Range
Yuma CountyCounty
ArizonaState
USACountry

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08778370017272064318132.jpg
Red Knob Collapsed Adit

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
09613350017272064315098.jpg
Weeksite

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
08440660017272026132979.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
08778370017272064318132.jpg
Red Knob Collapsed Adit

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
06194020017271927621174.jpg
Weeksite

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
08440660017272026132979.jpg
Weeksite, etc.

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
08778370017272064318132.jpg
Red Knob Collapsed Adit

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
09613350017272064315098.jpg
Weeksite

Red Knob Mine, Muggins Mountains uranium prospects, Muggins Mining District, Muggins Mountains, Yuma County, Arizona, USA
Latitude & Longitude (WGS84):
32° 46' 14'' North , 114° 15' 23'' West
Latitude & Longitude (decimal):
32.77056,-114.25639
GRN:
N22W69
Type:
Mining District
Köppen climate type:
BWh : Hot deserts climate
Mindat Locality ID:
33582
Long-form identifier:
mindat:1:2:33582:0
GUID (UUID V4):
0


A Au-Ag-Cu-U mining district located in T7-8S, R19-20W, G&SRM, in the Muggins Mountains, East of Yuma.

Mineralization is varied: (1) Relatively small, scattered, gold placer deposits in dry washes and in Tertiary cemented gravels, derived from free gold in quartz veins and veinlets in Mesozoic gneiss and schist; (2) Minor free gold and local copper mineralization associated with quartz veins and pegmatite dikes; (3): Bentonitic clay in old upper lake beds; and, (4) Indicated uranium mineralization in volcanic tuff and lacustrine sediments.

Workings are numerous small placer and prospecting operations since the 1860's. Total estimated and recorded placer production would amount to some 1,000 ounces of gold with about 200 ounces of silver. Mine production of base and precious metal ore would not amount to more than about 100 tons containing some 22 ounces of gold and a few ounces of silver and pounds of copper.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

15 valid minerals.

Rock Types Recorded


Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Calcite
Formula: CaCO3
ⓘ Carnotite
Formula: K2(UO2)2(VO4)2 · 3H2O
ⓘ Chalcanthite
Formula: CuSO4 · 5H2O
ⓘ 'Clinoptilolite Subgroup'
Formula: (Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
ⓘ Cuprite
Formula: Cu2O
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ 'Limonite'
ⓘ Native Gold
Formula: Au
Description: Placer gold; particles up to 0.15 inches diameter.
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ Pyromorphite
Formula: Pb5(PO4)3Cl
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
ⓘ Vanadinite
Formula: Pb5(VO4)3Cl
ⓘ Weeksite
Formula: K2(UO2)2(Si5O13) · 4H2O
Habit: Radial aggregates of fibrous to acicular crystals
Description: Occurs coating and intergrown with chalcedony, etc.
ⓘ Wulfenite
Formula: Pb(MoO4)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 4 - Oxides and Hydroxides
ⓘCuprite4.AA.10Cu2O
ⓘQuartz
var. Chalcedony		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘOpal4.DA.10SiO2 · nH2O
ⓘCarnotite4.HB.05K2(UO2)2(VO4)2 · 3H2O
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘChalcanthite7.CB.20CuSO4 · 5H2O
ⓘGypsum7.CD.40CaSO4 · 2H2O
ⓘWulfenite7.GA.05Pb(MoO4)
Group 8 - Phosphates, Arsenates and Vanadates
ⓘPyromorphite8.BN.05Pb5(PO4)3Cl
ⓘVanadinite8.BN.05Pb5(VO4)3Cl
ⓘAutunite8.EB.05Ca(UO2)2(PO4)2 · 10-12H2O
Group 9 - Silicates
ⓘUranophane9.AK.15Ca(UO2)2(SiO3OH)2 · 5H2O
ⓘWeeksite9.AK.30K2(UO2)2(Si5O13) · 4H2O
Unclassified
ⓘ'Clinoptilolite Subgroup'-(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
ⓘ'Limonite'-

List of minerals for each chemical element

HHydrogen
Hⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Hⓘ ChalcanthiteCuSO4 · 5H2O
Hⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ OpalSiO2 · nH2O
Hⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Hⓘ WeeksiteK2(UO2)2(Si5O13) · 4H2O
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
OOxygen
Oⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ CalciteCaCO3
Oⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Oⓘ ChalcanthiteCuSO4 · 5H2O
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
Oⓘ CupriteCu2O
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ OpalSiO2 · nH2O
Oⓘ PyromorphitePb5(PO4)3Cl
Oⓘ QuartzSiO2
Oⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Oⓘ VanadinitePb5(VO4)3Cl
Oⓘ WeeksiteK2(UO2)2(Si5O13) · 4H2O
Oⓘ WulfenitePb(MoO4)
NaSodium
Naⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
AlAluminium
Alⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
SiSilicon
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
Siⓘ OpalSiO2 · nH2O
Siⓘ QuartzSiO2
Siⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Siⓘ WeeksiteK2(UO2)2(Si5O13) · 4H2O
PPhosphorus
Pⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Pⓘ PyromorphitePb5(PO4)3Cl
SSulfur
Sⓘ ChalcanthiteCuSO4 · 5H2O
Sⓘ GypsumCaSO4 · 2H2O
ClChlorine
Clⓘ PyromorphitePb5(PO4)3Cl
Clⓘ VanadinitePb5(VO4)3Cl
KPotassium
Kⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Kⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
Kⓘ WeeksiteK2(UO2)2(Si5O13) · 4H2O
CaCalcium
Caⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Caⓘ CalciteCaCO3
Caⓘ Clinoptilolite Subgroup(Na/Ca/K)3-6[Al6-7Si29-30O72] · 20H2O
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
VVanadium
Vⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Vⓘ VanadinitePb5(VO4)3Cl
CuCopper
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ ChalcanthiteCuSO4 · 5H2O
Cuⓘ CupriteCu2O
MoMolybdenum
Moⓘ WulfenitePb(MoO4)
AuGold
Auⓘ Native GoldAu
PbLead
Pbⓘ PyromorphitePb5(PO4)3Cl
Pbⓘ VanadinitePb5(VO4)3Cl
Pbⓘ WulfenitePb(MoO4)
UUranium
Uⓘ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Uⓘ CarnotiteK2(UO2)2(VO4)2 · 3H2O
Uⓘ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
Uⓘ WeeksiteK2(UO2)2(Si5O13) · 4H2O

Localities in this Region

USA
USA

Other Regions, Features and Areas containing this locality

North AmericaContinent
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

US Atomic Energy Commission Preliminary Reconnaisance Reports.
Wilson, Eldred D. (1933) Geology and Mineral Deposits of Southern Yuma County, Arizona. University of Arizona Bulletin 134. Arizona Bureau of Minespp.218-220
Wilson, Eldred D. (1961) Gold Placers and Placering in Arizona. University of Arizona Bulletin 168. Arizona Bureau of Minespp.22-23
Keith, Stanton B. (1978) Index of Mining Properties in Yuma County, Arizona. University of Arizona Bulletin 192. Bureau of Geology and Mineral Technology 189pp.
(n.d.) ADMMR Mines Database, Arizona Geological Survey.
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