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Hoover Hill Mine, Asheboro, Randolph County, North Carolina, USAi
Regional Level Types
Hoover Hill MineMine
AsheboroCity
Randolph CountyCounty
North CarolinaState
USACountry

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Latitude & Longitude (WGS84):
35° 44' 49'' North , 79° 58' 10'' West
Latitude & Longitude (decimal):
35.74699,-79.96948
GRN:
N24W47
Type:
Mine
Köppen climate type:
Cfa : Humid subtropical climate
Nearest Settlements:
PlacePopulationDistance
Asheboro26,103 (2017)14.7km
Trinity6,669 (2017)16.5km
Randleman4,153 (2017)16.9km
Thomasville27,061 (2017)18.2km
Denton1,657 (2017)18.3km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Greensboro Gem & Mineral ClubGreensboro, North Carolina40km
Forsyth Gem and Mineral ClubWinston-Salem, North Carolina46km
Mindat Locality ID:
68552
Long-form identifier:
mindat:1:2:68552:1
GUID (UUID V4):
0


A former Au occurrence/mine located 12 miles WNW of town.

The highest grade ores occurred in pockets and steeply north-dipping chimney-like shoots (Nitze and Hanna, 1896). Reported ore minerals include pyrite with minor to trace sphalerite, bornite, galena, and gold (electrum) with gangue alteration minerals biotite, chlorite, and quartz and potassium feldspar. This record is based on the reporting of Carpenter (1976). However, Nitze and Hanna (1896) and Pardee and Park (1948) state that pyrite is the only sulfide present. The report of base metal sulfides in the Hoover Hill mineralization appears to be erroneous.

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


5 valid minerals. 2 erroneous literature entries.

Rock Types Recorded


Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Bornite
Formula: Cu5FeS4
ⓘ 'Chlorite Group'
ⓘ 'Feldspar Group'
ⓘ Galena ?
Formula: PbS
ⓘ 'K Feldspar'
ⓘ Native Gold
Formula: Au
ⓘ Orthoclase
Formula: K(AlSi3O8)
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrite var. Gold-bearing Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Sphalerite
Formula: ZnS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
ⓘBornite ?2.BA.15Cu5FeS4
ⓘSphalerite ?2.CB.05aZnS
ⓘGalena ?2.CD.10PbS
ⓘPyrite
var. Gold-bearing Pyrite		2.EB.05aFeS2
ⓘ2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘQuartz4.DA.05SiO2
Group 9 - Silicates
ⓘOrthoclase9.FA.30K(AlSi3O8)
Unclassified
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Feldspar Group'-
ⓘ'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
OOxygen
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ QuartzSiO2
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
MgMagnesium
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
AlAluminium
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ OrthoclaseK(AlSi3O8)
SiSilicon
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ QuartzSiO2
SSulfur
Sⓘ Pyrite var. Gold-bearing PyriteFeS2
Sⓘ BorniteCu5FeS4
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ OrthoclaseK(AlSi3O8)
TiTitanium
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
FeIron
Feⓘ Pyrite var. Gold-bearing PyriteFeS2
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ BorniteCu5FeS4
Feⓘ PyriteFeS2
CuCopper
Cuⓘ BorniteCu5FeS4
ZnZinc
Znⓘ SphaleriteZnS
AuGold
Auⓘ Native GoldAu
PbLead
Pbⓘ GalenaPbS

Other Regions, Features and Areas containing this locality

North AmericaContinent
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.

References

PARDEE, J T & PARK, JR., C. F. (1948), USGS PROF PAPER 213, PP. 85-__.
Koschmann, Albert Herbert, Bergendahl, M.H. (1968) Principal gold-producing districts of the United States. Professional Paper 610. US Geological Survey doi:10.3133/pp610
Carpenter, P. Albert III (1976) Metallic Mineral Deposits of the Carolina Slate Belt. Bulletin 84. North Carolina Geological Surveyp.113
[1]Moye, Robert J (2018) Sawyer-Keystone Trend of Au-Ag-As deposits in Randolph County, North Carolina: Geologic and metallogenic analysis. Geologic and metallogenic analysis North Carolina Geological Survey Open-File Report 2018-18 18.
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