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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Drws-y-Coed Mine (Drwy-y-Coed Mine), Nantlle Vale, Llanllyfni, Gwynedd, Wales, UKi
Regional Level Types
Drws-y-Coed Mine (Drwy-y-Coed Mine)Mine (Abandoned)
Nantlle Vale- not defined -
LlanllyfniCommunity
GwyneddCounty
WalesCountry
UKCountry

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Latitude & Longitude (WGS84):
53° 3' 30'' North , 4° 10' 15'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SH545535
Type:
Mine (Abandoned) - last checked 2020
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Talysarn1,086 (2017)5.8km
Llanberis1,844 (2017)7.2km
Penygroes1,793 (2017)7.6km
Groeslon880 (2017)7.6km
Bontnewydd951 (2017)9.1km
Mindat Locality ID:
4275
Long-form identifier:
mindat:1:2:4275:1
GUID (UUID V4):
0
Other/historical names associated with this locality:
Caernarvonshire


A very old mine that was reputedly visited by King Edward 1st in 1284. There is a record of Cornish miners working at Drws-y-Coed in 1761 and many miners and "copper ladies" moved here from Parys Mountain in Anglesey during the 1830s as the lodes there became less productive.

Probably at its peak during the period circa 1820-40, the Drws-y-Coed mine remained in production until towards the end of the 19th century. However, by the 1880s output rarely exceeded 200 tons per annum. Attempts to work the mine in the early part of the 20th century were largely unsuccessful.

Although a total output of 13000 tons of ore is recorded, this is thought to be a great underestimate, with the real output possibly about double this figure.

Ref: The Old Copper Mines of Snowdonia, David Bick, 3rd Edition 2003.

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.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Sphalerite2.CB.05aZnS
Chalcopyrite2.CB.10aCuFeS2
Pyrrhotite2.CC.10Fe1-xS
Millerite2.CC.20NiS
Galena2.CD.10PbS
Pyrite2.EB.05aFeS2
Arsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Wroewolfeite7.DD.10Cu4(SO4)(OH)6 · 2H2O
Unclassified
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H WroewolfeiteCu4(SO4)(OH)6 · 2H2O
CCarbon
C CalciteCaCO3
C MalachiteCu2(CO3)(OH)2
OOxygen
O CalciteCaCO3
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O WroewolfeiteCu4(SO4)(OH)6 · 2H2O
SiSilicon
Si QuartzSiO2
SSulfur
S ArsenopyriteFeAsS
S BorniteCu5FeS4
S ChalcopyriteCuFeS2
S GalenaPbS
S MilleriteNiS
S PyriteFeS2
S PyrrhotiteFe1-xS
S SphaleriteZnS
S WroewolfeiteCu4(SO4)(OH)6 · 2H2O
CaCalcium
Ca CalciteCaCO3
FeIron
Fe ArsenopyriteFeAsS
Fe BorniteCu5FeS4
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe PyrrhotiteFe1-xS
NiNickel
Ni MilleriteNiS
CuCopper
Cu BorniteCu5FeS4
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
Cu WroewolfeiteCu4(SO4)(OH)6 · 2H2O
ZnZinc
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
PbLead
Pb GalenaPbS

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK

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.

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