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Nantyrarian Mine (Silver Stream Mine. Blaendyffryn Mine), Goginan, Melindwr, Ceredigion, Wales, UKi
Regional Level Types
Nantyrarian Mine (Silver Stream Mine. Blaendyffryn Mine)Mine (Inactive)
Goginan- not defined -
Melindwr- not defined -
CeredigionCounty
WalesCountry
UKCountry

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Key
Latitude & Longitude (WGS84):
52° 24' 53'' North , 3° 54' 15'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SN705814
Locality type:
Mine (Inactive) - last checked 2019
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Capel Bangor256 (2017)4.7km
Bow Street1,572 (2017)8.9km
Llanilar1,085 (2017)10.5km
Penparcau3,088 (2011)11.6km
Aberystwyth18,749 (2017)12.1km
Other/historical names associated with this locality:
Dyfed; Cardiganshire


Approaching along the track from Goginan and entering the wood there is the ruin of the crusher house on the left, though the buddles shown on the 1888 Ordnance Survey map are covered over. On the right is a tip, overgrown and trodden down by cattle but with abundant chalcopyrite and some galena. Above this tip is perhaps a small wheelpit. Following along the footpath a very large wheelpit is high up on the bank of the stream and beyond that to the right of ther footpath amongst the woods should be a shaft collar. The crusher house and wheelpit are shown conected by a driving rod and aqueduct. In the middle of the small field is a mound of rubble which is marked as a square structure on the 1888 OS map. On the far side of the small field amongst the pine trees is an open gunnis at the head of which a trial shaft is marked on the OS map and below which is a small but apparently barren tip. Immediately below this is the well preserved ruin of a cottage.
The 1905 Ordnance Survey map shows further development east of the stream with several levels at the level of the stream and a shaft in the field though none of these are now apparent.
The country rock is a pale, brittle mud stone.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


9 valid minerals.

Detailed Mineral List:

Bournonite
Formula: PbCuSbS3
Description: I have failed to find any evidence of this mineral at this location and it was the only listed mineral before I updated the entry for this location after visiting in December 2019. However looking at other mines nearby for example Ceunant there is also only 1 mineral listed and that too is Bournonite. I begin to suspect that entries were copied and this mineral has been carried over.
Reference: BMS Database
Calcite
Formula: CaCO3
Description: A single example as a thin vein through country rock, Collected December 2019 and positively identified.
Reference: Chris Popham collection
Chalcopyrite
Formula: CuFeS2
Description: Extremely common often with a brown surface tarnish but bright when broken and often with peacock tarnish. Collected December 2019 and positively identified.
Reference: Chris Popham collection
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Description: Patchy associated with chalcopyrite in contact with country rock. Collected December 2019 and positively identified.
Reference: Chris Popham collection
Galena
Formula: PbS
Description: Often found alongside chalcopyrite and may be finely gritty or where found in thin veins there may be a distinct cubic habit. Collected December 2019 and positively identified.
Reference: Chris Popham collection
Langite
Formula: Cu4(SO4)(OH)6 · 2H2O
Description: Only found in microscopic quantities on chalcopyrite bearing quartz. Collected December 2019 and positively identified.
Reference: Chris Popham collection
Malachite
Formula: Cu2(CO3)(OH)2
Description: Only found in microscopic quantities on chalcopyrite as radiating circles of needles. Collected December 2019 and positively identified.
Reference: Chris Popham collection
Quartz
Formula: SiO2
Description: Mostly as rock forming material but occasionally as microscopic well formed crystals. Collected December 2019 and positively identified.
Reference: Chris Popham collection
Sphalerite
Formula: ZnS
Description: Found with both red-brown and very pale green-yellow colours in isolated patches within quartz. Collected December 2019 and positively identified.
Reference: Chris Popham collection

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bournonite2.GA.50PbCuSbS3
Chalcopyrite2.CB.10aCuFeS2
Galena2.CD.10PbS
Sphalerite2.CB.05aZnS
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
Langite7.DD.10Cu4(SO4)(OH)6 · 2H2O
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
Group 3 - SULFOSALTS
ø = 3
Bournonite3.4.3.2PbCuSbS3
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)4(XO4)Zq·xH2O
Langite31.4.3.1Cu4(SO4)(OH)6 · 2H2O
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2

List of minerals for each chemical element

HHydrogen
H MalachiteCu2(CO3)(OH)2
H LangiteCu4(SO4)(OH)6 · 2H2O
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
CCarbon
C MalachiteCu2(CO3)(OH)2
C CalciteCaCO3
OOxygen
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O CalciteCaCO3
O LangiteCu4(SO4)(OH)6 · 2H2O
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SiSilicon
Si QuartzSiO2
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SSulfur
S BournonitePbCuSbS3
S ChalcopyriteCuFeS2
S GalenaPbS
S SphaleriteZnS
S LangiteCu4(SO4)(OH)6 · 2H2O
CaCalcium
Ca CalciteCaCO3
FeIron
Fe ChalcopyriteCuFeS2
CuCopper
Cu BournonitePbCuSbS3
Cu ChalcopyriteCuFeS2
Cu MalachiteCu2(CO3)(OH)2
Cu LangiteCu4(SO4)(OH)6 · 2H2O
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
ZnZinc
Zn SphaleriteZnS
SbAntimony
Sb BournonitePbCuSbS3
PbLead
Pb BournonitePbCuSbS3
Pb GalenaPbS

Other Regions, Features and Areas containing this locality

British IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent

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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