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Old Guard Mine, Tombstone, Tombstone Mining District, Cochise County, Arizona, USAi
Regional Level Types
Old Guard MineMine
TombstoneTown
Tombstone Mining DistrictMining District
Cochise CountyCounty
ArizonaState
USACountry

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Latitude & Longitude (WGS84):
31° 42' 11'' North , 110° 4' 23'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Tombstone1,312 (2017)1.2km
Whetstone2,617 (2017)25.2km
Saint David1,699 (2011)26.0km
Huachuca City1,755 (2017)26.0km
Sierra Vista43,355 (2017)27.3km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Huachuca Mineral and Gem ClubSierra Vista, Arizona27km
Sunsites Gem and Mineral ClubPearce, Arizona33km
Mindat Locality ID:
30675
Long-form identifier:
mindat:1:2:30675:8
GUID (UUID V4):
00f27928-9ccd-41a6-a05e-a926f43c33f7
Other/historical names associated with this locality:
Royal Guard Mine; Imperial Guard Mining Co.; Silver Bar Mining Co.; Tombstone Silver Fields Mining Co.


A former small underground Ag-Au-Pb-Mn occurrence/mine located in the SW¼ sec. 11 and sec. 14, T20S, R22E, G&SRM, 1.2 km (0.8 mile) SSW of Tombstone, on private land. Located directly between the Herschel Mine and the Lucky Cuss Mine. Produced during the period 1905-1940. Owned at times, or in part, by the Old Guard Mining Co., Imperial Guard Mining Co., Silver Bar Mining Co., and the Tombstone Silver Fields Mining Co.

Mineralization is a replacement deposit hosted in limestone and Late Cretaceous shale, with oxidized ore shoots containing argentiferous lead and manganese ores along the Lucky Cuss fault zone at junctions with intersecting fissures. The ore zone strikes NNE and dips 70-75E. Local rocks include Cretaceous to Late Jurassic sedimentary rocks with minor volcanic rocks.

Local geologic structures include Geologic structures include the West Side of the Tombstone Basin, Northerly faulting, and the Lucky Cuss Zone.

Workings include an inclined shaft. Some 2,000 tons of ore were produced intermittently between 1905 and 1940.

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


12 valid minerals. 1 (TL) - type locality of valid minerals.

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

Detailed Mineral List:

Bromargyrite
Formula: AgBr
Chlorargyrite
Formula: AgCl
Description: Massive material forming cores of circles of khinite crystals on fracture surfaces of silicified granodiorite.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Dugganite
Formula: Pb3Zn3(AsO4)2(TeO6)
Habit: Minute, sparkling, drusy
Description: Found on old dumps. Occurs replacing outer edges of khinite crystal rings.
Gold
Formula: Au
Description: Cementing crystals of quetzalcoatlite.
Khinite (TL)
Formula: Pb2+Cu2+3[Te6+O6](OH)2
Type Locality:
Habit: Corroded, minute (up to 0.15mm) crystals forming rings.
Colour: Deep green.
Description: Found in dump material as corroded crystals forming rings on fracture surfaces of silicified granodiorite.
'Khinite-3T'
Formula: Pb2+Cu2+3Te6+O6(OH)2
Habit: Tabular, hexagonal, euhedral crystals to 0.5mm.
Colour: Deep green
Description: Thin crystalline films on fractures in quartz gangue and as crystals in vugs.
Quartz
Formula: SiO2
Quetzalcoatlite
Formula: Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
Colour: Bright blue
Description: One tiny specimen as small nodules of coarsely-granular crystals cemented with gold.
Sonoraite
Formula: Fe3+(TeO3)(OH) · H2O
Tenorite
Formula: CuO
Tlapallite
Formula: (Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O
Xocomecatlite
Formula: Cu3(TeO4)(OH)4

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Gold1.AA.05Au
Group 3 - Halides
Bromargyrite3.AA.15AgBr
Chlorargyrite3.AA.15AgCl
Group 4 - Oxides and Hydroxides
Tenorite4.AB.10CuO
Quartz4.DA.05SiO2
Khinite (TL)4.FD.30Pb2+Cu2+3[Te6+O6](OH)2
'Khinite-3T'4.FD.30Pb2+Cu2+3Te6+O6(OH)2
Quetzalcoatlite4.FE.45Zn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
Tlapallite4.JL.25(Ca,Pb)3CaCu6[Te4+3Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O
Sonoraite4.JN.05Fe3+(TeO3)(OH) · H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Xocomecatlite7.BB.50Cu3(TeO4)(OH)4
Group 8 - Phosphates, Arsenates and Vanadates
Dugganite8.DL.20Pb3Zn3(AsO4)2(TeO6)
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1

List of minerals for each chemical element

HHydrogen
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
H KhinitePb2+Cu32+[Te6+O6](OH)2
H Khinite-3TPb2+Cu32+Te6+O6(OH)2
H QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
H SonoraiteFe3+(TeO3)(OH) · H2O
H Tlapallite(Ca,Pb)3CaCu6[Te34+Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O
H XocomecatliteCu3(TeO4)(OH)4
OOxygen
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
O DugganitePb3Zn3(AsO4)2(TeO6)
O KhinitePb2+Cu32+[Te6+O6](OH)2
O Khinite-3TPb2+Cu32+Te6+O6(OH)2
O QuartzSiO2
O QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
O SonoraiteFe3+(TeO3)(OH) · H2O
O TenoriteCuO
O Tlapallite(Ca,Pb)3CaCu6[Te34+Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O
O XocomecatliteCu3(TeO4)(OH)4
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
SiSilicon
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Si QuartzSiO2
SSulfur
S Tlapallite(Ca,Pb)3CaCu6[Te34+Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O
ClChlorine
Cl ChlorargyriteAgCl
Cl QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
CaCalcium
Ca Tlapallite(Ca,Pb)3CaCu6[Te34+Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O
FeIron
Fe SonoraiteFe3+(TeO3)(OH) · H2O
CuCopper
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cu KhinitePb2+Cu32+[Te6+O6](OH)2
Cu Khinite-3TPb2+Cu32+Te6+O6(OH)2
Cu QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
Cu TenoriteCuO
Cu Tlapallite(Ca,Pb)3CaCu6[Te34+Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O
Cu XocomecatliteCu3(TeO4)(OH)4
ZnZinc
Zn DugganitePb3Zn3(AsO4)2(TeO6)
Zn QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
AsArsenic
As DugganitePb3Zn3(AsO4)2(TeO6)
BrBromine
Br BromargyriteAgBr
AgSilver
Ag BromargyriteAgBr
Ag ChlorargyriteAgCl
Ag QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
TeTellurium
Te DugganitePb3Zn3(AsO4)2(TeO6)
Te KhinitePb2+Cu32+[Te6+O6](OH)2
Te Khinite-3TPb2+Cu32+Te6+O6(OH)2
Te QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
Te SonoraiteFe3+(TeO3)(OH) · H2O
Te Tlapallite(Ca,Pb)3CaCu6[Te34+Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O
Te XocomecatliteCu3(TeO4)(OH)4
AuGold
Au GoldAu
PbLead
Pb DugganitePb3Zn3(AsO4)2(TeO6)
Pb KhinitePb2+Cu32+[Te6+O6](OH)2
Pb Khinite-3TPb2+Cu32+Te6+O6(OH)2
Pb QuetzalcoatliteZn6Cu3(TeO6)2(OH)6 · AgxPbyClx+2y
Pb Tlapallite(Ca,Pb)3CaCu6[Te34+Te6+O12]2(Te4+O3)2(SO4)2 · 3H2O

Other Databases

Link to USGS MRDS:10027015

Other Regions, Features and Areas containing this locality

Mexico
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.

References

 
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