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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Benallt Mine, Nantlle Vale, Llanllyfni, Gwynedd, Wales, UKi
Regional Level Types
Benallt MineMine
Nantlle ValeValley
LlanllyfniCommunity
GwyneddCounty
WalesCountry
UKCountry

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Latitude & Longitude (WGS84):
53° 3' 29'' North , 4° 11' 4'' West
Latitude & Longitude (decimal):
53.05833,-4.18472
GRN:
N36W02
UK National Grid Reference:
SH536535
Type:
Mine
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Talysarn1,086 (2017)4.9km
Penygroes1,793 (2017)6.7km
Groeslon880 (2017)6.8km
Llanberis1,844 (2017)7.6km
Bontnewydd951 (2017)8.5km
Mindat Locality ID:
62824
Long-form identifier:
mindat:1:2:62824:3
GUID (UUID V4):
0
Other/historical names associated with this locality:
Benallt Copper Mine


A level of just 100 yards in 1845, Bennalt mine was a classic example of over-promotion and fraud in the 1870s. Subsequently, the directors were faced with protracted legal action.

Never successful, Bennalt Mine managed to survive till 1931!

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


5 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘGalena2.CD.10PbS
ⓘPyrite2.EB.05aFeS2
Group 5 - Nitrates and Carbonates
ⓘAnkerite5.AB.10Ca(Fe2+,Mg)(CO3)2

List of minerals for each chemical element

CCarbon
Cⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
OOxygen
Oⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
MgMagnesium
Mgⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
SSulfur
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
CaCalcium
Caⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
FeIron
Feⓘ AnkeriteCa(Fe2+,Mg)(CO3)2
Feⓘ ChalcopyriteCuFeS2
Feⓘ PyriteFeS2
CuCopper
Cuⓘ ChalcopyriteCuFeS2
ZnZinc
Znⓘ SphaleriteZnS
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.

References

Bick, David (2003) The old copper mines of Snowdonia, 3rd edition.
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