Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Holmbush Mine, Callington United Mines (incl. Emmens United Mines), Stokeclimsland, Cornwall, England, UKi
Regional Level Types
Holmbush MineMine (Abandoned)
Callington United Mines (incl. Emmens United Mines)Group of Mines
StokeclimslandVillage
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 31' 28'' North , 4° 19' 4'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SX358720
Type:
Mine (Abandoned) - last checked 2020
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Callington5,786 (2017)2.6km
Pensilva1,663 (2017)7.3km
Gunnislake4,044 (2017)7.4km
Calstock790 (2017)8.5km
Bere Alston2,164 (2018)10.2km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
British Micromount Society, Devon and Cornwall Branch MeetingsLiskeard, Cornwall13km
Mindat Locality ID:
873
Long-form identifier:
mindat:1:2:873:1
GUID (UUID V4):
0


Holmbush, Redmoor, Kelly Bray where usually worked in conjunction. The small mines of West Holmbush, East Holmsbush (Lady Beam), and South Kelly Bray were occasionally included.

The mine is quite old and was probably at work in the early 1600's, possibly mostly on the lead lode, and again in the late 1700's. From about the late 1830's the amalgamation of the mines may have started under various names to the final closure in 1892.
Holmbush mine developed five ENE-WSW copper-tin lodes of which only Holmbush and Flopjack was developed to any depth. A N-S lead lode was also worked. Where the lead lode intersects the E-W lodes it displaces them 15mts north on the east side. The lead lode was worked by levels driven north and south from the other two E-W lodes lodes between the 90 and 132 fathom levels. The two E-W lodes about 185mts apart where developed by a number of shafts to a depth of 390 mts.
The dumps were reworked in 1919-21.
Ref: Richardson P.H.G. (1991) Mines of Dartmoor & the Taymar Valley after 1913, Devon Books, Tiverton.
Dines 1956.
Hamilton Jenkin XV 1969.

There is a dump beside the Kelly Bray to Stoke Climsland road where the 2 engine houses have been partly restored and made safe. This dump has been partly cleared on the field side. Back a little towards Kelly Bray a small unmade track leads down into the valley. Beside this is another dump which has been almost completely cleared. Along the valley floor there is a very substantial dump which does not appear to have been touched by the reworking carried out in the early 1920s.
The grid reference marks the engine house ruin at Hitchins Shaft.

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


30 valid minerals.

Detailed Mineral List:

Anglesite
Formula: PbSO4
Aragonite
Formula: CaCO3
Arsenopyrite
Formula: FeAsS
Aurichalcite ?
Formula: (Zn,Cu)5(CO3)2(OH)6
Description: The specimen in the photo can be a variety of things, including aurichalcite.
Cassiterite
Formula: SnO2
Cerussite
Formula: PbCO3
Chalcopyrite
Formula: CuFeS2
Covellite
Formula: CuS
Description: Note that the specimens in the photos may be of post-collection growth.
Cuprite
Formula: Cu2O
Fluorapatite
Formula: Ca5(PO4)3F
Fluorapatite var. Carbonate-rich Fluorapatite
Formula: Ca5(PO4,CO3)3(F,O)
Fluorite
Formula: CaF2
Galena
Formula: PbS
Goethite
Formula: Fe3+O(OH)
Gypsum
Formula: CaSO4 · 2H2O
Hemimorphite ?
Formula: Zn4Si2O7(OH)2 · H2O
Kaolinite
Formula: Al2(Si2O5)(OH)4
Description: (constituent of tavistockite)
Langite
Formula: Cu4(SO4)(OH)6 · 2H2O
Malachite
Formula: Cu2(CO3)(OH)2
Marcasite
Formula: FeS2
Melanterite ?
Formula: Fe2+(H2O)6SO4 · H2O
Native Copper
Formula: Cu
Native Silver
Formula: Ag
Native Sulphur
Formula: S8
Olivenite ?
Formula: Cu2(AsO4)(OH)
Pyrargyrite
Formula: Ag3SbS3
Pyrite
Formula: FeS2
Quartz
Formula: SiO2
Siderite
Formula: FeCO3
Sphalerite
Formula: ZnS
Stannite
Formula: Cu2FeSnS4
'Tavistockite'
'Wolframite Group'

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Copper1.AA.05Cu
Native Silver1.AA.05Ag
Native Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
Covellite2.CA.05aCuS
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Stannite2.CB.15aCu2FeSnS4
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Marcasite2.EB.10aFeS2
Arsenopyrite2.EB.20FeAsS
Pyrargyrite2.GA.05Ag3SbS3
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Goethite4.00.Fe3+O(OH)
Cuprite4.AA.10Cu2O
Quartz4.DA.05SiO2
Cassiterite4.DB.05SnO2
'Wolframite Group'4.DB.30 va
Group 5 - Nitrates and Carbonates
Siderite5.AB.05FeCO3
Aragonite5.AB.15CaCO3
Cerussite5.AB.15PbCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Aurichalcite ?5.BA.15(Zn,Cu)5(CO3)2(OH)6
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anglesite7.AD.35PbSO4
Melanterite ?7.CB.35Fe2+(H2O)6SO4 · H2O
Gypsum7.CD.40CaSO4 · 2H2O
Langite7.DD.10Cu4(SO4)(OH)6 · 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
Olivenite ?8.BB.30Cu2(AsO4)(OH)
Fluorapatite
var. Carbonate-rich Fluorapatite
8.BN.05Ca5(PO4,CO3)3(F,O)
8.BN.05Ca5(PO4)3F
Group 9 - Silicates
Hemimorphite ?9.BD.10Zn4Si2O7(OH)2 · H2O
Kaolinite9.ED.05Al2(Si2O5)(OH)4
Unclassified
'Tavistockite'-

List of minerals for each chemical element

HHydrogen
H Aurichalcite(Zn,Cu)5(CO3)2(OH)6
H GoethiteFe3+O(OH)
H GypsumCaSO4 · 2H2O
H HemimorphiteZn4Si2O7(OH)2 · H2O
H KaoliniteAl2(Si2O5)(OH)4
H LangiteCu4(SO4)(OH)6 · 2H2O
H MalachiteCu2(CO3)(OH)2
H MelanteriteFe2+(H2O)6SO4 · H2O
H OliveniteCu2(AsO4)(OH)
CCarbon
C AragoniteCaCO3
C Aurichalcite(Zn,Cu)5(CO3)2(OH)6
C Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
C CerussitePbCO3
C MalachiteCu2(CO3)(OH)2
C SideriteFeCO3
OOxygen
O AnglesitePbSO4
O AragoniteCaCO3
O Aurichalcite(Zn,Cu)5(CO3)2(OH)6
O Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
O CassiteriteSnO2
O CerussitePbCO3
O CupriteCu2O
O FluorapatiteCa5(PO4)3F
O GoethiteFe3+O(OH)
O GypsumCaSO4 · 2H2O
O HemimorphiteZn4Si2O7(OH)2 · H2O
O KaoliniteAl2(Si2O5)(OH)4
O LangiteCu4(SO4)(OH)6 · 2H2O
O MalachiteCu2(CO3)(OH)2
O MelanteriteFe2+(H2O)6SO4 · H2O
O OliveniteCu2(AsO4)(OH)
O QuartzSiO2
O SideriteFeCO3
FFluorine
F Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
F FluorapatiteCa5(PO4)3F
F FluoriteCaF2
AlAluminium
Al KaoliniteAl2(Si2O5)(OH)4
SiSilicon
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si KaoliniteAl2(Si2O5)(OH)4
Si QuartzSiO2
PPhosphorus
P Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
P FluorapatiteCa5(PO4)3F
SSulfur
S AnglesitePbSO4
S ArsenopyriteFeAsS
S ChalcopyriteCuFeS2
S CovelliteCuS
S GalenaPbS
S GypsumCaSO4 · 2H2O
S LangiteCu4(SO4)(OH)6 · 2H2O
S MarcasiteFeS2
S MelanteriteFe2+(H2O)6SO4 · H2O
S PyrargyriteAg3SbS3
S PyriteFeS2
S SphaleriteZnS
S StanniteCu2FeSnS4
S Native SulphurS8
CaCalcium
Ca AragoniteCaCO3
Ca Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Ca FluorapatiteCa5(PO4)3F
Ca FluoriteCaF2
Ca GypsumCaSO4 · 2H2O
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe GoethiteFe3+O(OH)
Fe MarcasiteFeS2
Fe MelanteriteFe2+(H2O)6SO4 · H2O
Fe PyriteFeS2
Fe SideriteFeCO3
Fe StanniteCu2FeSnS4
CuCopper
Cu Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Cu ChalcopyriteCuFeS2
Cu CovelliteCuS
Cu CupriteCu2O
Cu Native CopperCu
Cu LangiteCu4(SO4)(OH)6 · 2H2O
Cu MalachiteCu2(CO3)(OH)2
Cu OliveniteCu2(AsO4)(OH)
Cu StanniteCu2FeSnS4
ZnZinc
Zn Aurichalcite(Zn,Cu)5(CO3)2(OH)6
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
As OliveniteCu2(AsO4)(OH)
AgSilver
Ag PyrargyriteAg3SbS3
Ag Native SilverAg
SnTin
Sn CassiteriteSnO2
Sn StanniteCu2FeSnS4
SbAntimony
Sb PyrargyriteAg3SbS3
PbLead
Pb AnglesitePbSO4
Pb CerussitePbCO3
Pb GalenaPbS

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Guadalupian
ⓘ Major polymetallic mineralization~270 MaCornwall, England, UK
   Cisuralian
ⓘ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
ⓘ Greisenization (latest age)~280 MaCornwall, England, UK
ⓘ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
ⓘ Formation of metallized pegmatites~285 MaCornwall, England, UK
ⓘ Greisenization (earliest age)~285 MaCornwall, England, UK
ⓘ Emplacement of major plutons~295 MaCornwall, England, UK

Other Regions, Features and Areas containing this locality


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