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Tasmania Reef, Beaconsfield Mine (Tasmania mine), Beaconsfield, Beaconsfield district, West Tamar municipality, Tasmania, Australiai
Regional Level Types
Tasmania ReefReef
Beaconsfield Mine (Tasmania mine)Mine
Beaconsfield- not defined -
Beaconsfield districtDistrict
West Tamar municipalityMunicipality
TasmaniaState
AustraliaCountry

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Latitude & Longitude (WGS84):
41° 12' 5'' South , 146° 48' 51'' East
Latitude & Longitude (decimal):
-41.20160,146.81440
GeoHash:
G#: r28msg6zr
GRN:
S28E80
Type:
Reef
KΓΆppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Beaconsfield1,217 (2012)0.2km
Beauty Point1,116 (2015)4.4km
Sidmouth403 (2014)6.8km
Kayena328 (2014)6.9km
Deviot466 (2014)10.4km
Mindat Locality ID:
121138
Long-form identifier:
mindat:1:2:121138:5
GUID (UUID V4):
0a2211b6-477f-401b-ae09-94689ac97e0f


The active Beaconsfield mine (Beaconsfield Gold Project) is centred on the old Tasmania Reef Mine which is located 40 kilometres by road north-west of Launceston, Tasmania.
The Tasmania Reef is a gold-bearing quartz-carbonate-sulphide vein occupying an old fault structure which transgresses a series of sedimentary beds. The reef at Beaconsfield is in many respects analogous to the gold-arsenic-quartz, dilational-fill mesothermal deposits of Central Victoria, particularly those at Ballarat and Bendigo. The Tasmania Reef has an average strike length of around 350 metres, an average horizontal thickness of approximately 3.1 metres and dips to the south at an average of around 60 degrees.
The underground mine was operated from 1877 for 37 years, during which time approximately 840,000 ounces of gold were produced from 1,070,000 tonnes of ore at an average mill recovered grade of 24.3 g/t gold. With an average mill recovery of around 85%, the average head grade of the ore, after mining dilution, would have been over 28 g/t gold, making Beaconsfield one of the richest gold mines in Australia at the time. The mine was worked to a maximum depth of 455 metres. Economic conditions and technical considerations, in particular the inefficient mine pumping methods available at that time, led to the cessation of mining at the outbreak of World War I in 1914 and the subsequent flooding of the shafts and workings.
Mining restarted in the 1990s.
The present day gold mine can be seen from a viewing platform at the Grubb Shaft Museum - Gold & Heritage.

Refs.:
http://www.beaconsfieldgold.com.au/BMJV.html

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


13 valid minerals.

Detailed Mineral List:

β“˜ Ankerite
Formula: Ca(Fe2+,Mg)(CO3)2
β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Bismuthinite
Formula: Bi2S3
β“˜ Calcite
Formula: CaCO3
β“˜ Chromite
Formula: Fe2+Cr3+2O4
β“˜ Galena
Formula: PbS
β“˜ Gold
Formula: Au
β“˜ Melanterite
Formula: Fe2+(H2O)6SO4 · H2O
β“˜ Meneghinite
Formula: Pb13CuSb7S24
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Fuchsite
Formula: K(Al,Cr)3Si3O10(OH)2
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
β“˜ Sphalerite
Formula: ZnS

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Gold1.AA.05Au
Group 2 - Sulphides and Sulfosalts
β“˜Sphalerite2.CB.05aZnS
β“˜Galena2.CD.10PbS
β“˜Bismuthinite2.DB.05Bi2S3
β“˜Pyrite2.EB.05aFeS2
β“˜Arsenopyrite2.EB.20FeAsS
β“˜Meneghinite2.HB.05bPb13CuSb7S24
Group 4 - Oxides and Hydroxides
β“˜Chromite4.BB.05Fe2+Cr3+2O4
β“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
β“˜Ankerite5.AB.10Ca(Fe2+,Mg)(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Melanterite7.CB.35Fe2+(H2O)6SO4 Β· H2O
Group 9 - Silicates
β“˜Muscovite
var. Fuchsite		9.EC.15K(Al,Cr)3Si3O10(OH)2
β“˜9.EC.15KAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
Hβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Hβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CCarbon
Cβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Oβ“˜ CalciteCaCO3
Oβ“˜ ChromiteFe2+Cr23+O4
Oβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Oβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ QuartzSiO2
MgMagnesium
Mgβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
AlAluminium
Alβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
SiSilicon
Siβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ QuartzSiO2
SSulfur
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BismuthiniteBi2S3
Sβ“˜ GalenaPbS
Sβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Sβ“˜ MeneghinitePb13CuSb7S24
Sβ“˜ PyriteFeS2
Sβ“˜ SphaleriteZnS
KPotassium
Kβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Caβ“˜ CalciteCaCO3
CrChromium
Crβ“˜ ChromiteFe2+Cr23+O4
Crβ“˜ Muscovite var. FuchsiteK(Al,Cr)3Si3O10(OH)2
FeIron
Feβ“˜ AnkeriteCa(Fe2+,Mg)(CO3)2
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ ChromiteFe2+Cr23+O4
Feβ“˜ MelanteriteFe2+(H2O)6SO4 · H2O
Feβ“˜ PyriteFeS2
CuCopper
Cuβ“˜ MeneghinitePb13CuSb7S24
ZnZinc
Znβ“˜ SphaleriteZnS
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
SbAntimony
Sbβ“˜ MeneghinitePb13CuSb7S24
AuGold
Auβ“˜ GoldAu
PbLead
Pbβ“˜ GalenaPbS
Pbβ“˜ MeneghinitePb13CuSb7S24
BiBismuth
Biβ“˜ BismuthiniteBi2S3

Other Regions, Features and Areas containing this locality

Australia
Australian PlateTectonic Plate

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