Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

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The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.

Locality Name:
Ganllwyd, Dolgellau Gold Belt, Gwynedd, Wales, UK

mindat Locality ID: 23994
mindat URL: http://www.mindat.org/loc-23994.html

Tectonic Settings:

Total number of sublocalities beneath "Ganllwyd, Dolgellau Gold Belt, Gwynedd, Wales, UK": 9
Total number of bottom-level sublocalities: 9

Number of Child Localities: 9
Child Localities:
Cefn Coch Mine (incl. Berthlwyd Mine; New California Mine)
Cefndeuddwr Mine
Cwmheisian East Mine
Cwmheisian West Mine
Dolfrwnog Mine (incl. Turf Copper Mine)
Ffridd-goch Mine
Gwynfynydd Mine (Gwyn Mine; Morgan Mine; Mount Morgan Mine; British Gold Fields)
Princess Marina Mine (Bedd-y-Coedwr Mine; Beddcoedwr Mine)
Tyddyn Gwladys Mine

Latitude: 52°49'11"N
Longitude: 3°52'31"W
Decimal Degree (lat, lon): 52.819722222222,-3.8752777777778

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
	This mineral's age has not yet been recorded.

Arsenopyrite	Calcite	Chalcopyrite	Cobaltite	Copper	Diaspore	Halotrichite	Marcasite	Nickeline	None
Pyrite	Quartz	Rocksalt	Sphalerite	Tetradymite	Tetrahedrite

Arsenopyrite ()*	Calcite ()*	Chalcopyrite ()*	Cobaltite ()*	Copper ()*
Dolomite ()*	Galena ()*	Goethite ()*	Gold ()*	Halotrichite ()*
Mackinawite ()*	Marcasite ()*	Pickeringite ()*	Pyrargyrite ()*	Pyrite ()*
Pyrrhotite ()*	Quartz ()*	Sphalerite ()*	Tellurobismuthite ()*	Tetrahedrite-(Zn) ()*

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Ag Al As Au Bi C Ca Co Cu Fe H Mg Ni O Pb S Sb Si Te Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Arsenopyrite Calcite Chalcopyrite Cobaltite Copper Diaspore Halotrichite Marcasite Nickeline None
Pyrite Quartz Rocksalt Sphalerite Tetradymite Tetrahedrite

20 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Arsenopyrite ()*	Arsenopyrite	FeAsS	2	123329,123333	9052
Calcite ()*	Calcite	Ca(CO₃)	2	123329,123331	27770
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	6	123325,123329,123330,123331,123332,123333	27198
Cobaltite ()*	Cobaltite	CoAsS	3	123325,123326,123330	966
Copper ()*	Copper	Cu	1	123329	3846
Dolomite ()*	None	CaMg(CO₃)₂	2	123325,123330	9895
Galena ()*	Rocksalt	PbS	6	123325,123327,123328,123331,123332,123333	24243
Goethite ()*	Diaspore	FeO(OH)	1	123331	7437
Gold ()*	Copper	Au	8	123325,123326,123327,123329,123330,123331,123332,123333	30554
Halotrichite ()*	Halotrichite	Fe²⁺Al₂(SO₄)₄·22H₂O	1	123331	409
Mackinawite ()*	None	(Fe,Ni)_1+xS (x = 0-0.07)	1	123326	451
Marcasite ()*	Marcasite	FeS₂	1	123331	5674
Pickeringite ()*	Halotrichite	MgAl₂(SO₄)₄·22H₂O	1	123331	265
Pyrargyrite ()*	None	Ag₃SbS₃	1	123333	1425
Pyrite ()*	Pyrite	FeS₂	6	123327,123329,123330,123331,123332,123333	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	1	123331	9056
Quartz ()*	Quartz	SiO₂	1	123329	61156
Sphalerite ()*	Sphalerite	ZnS	4	123325,123327,123331,123332	21482
Tellurobismuthite ()*	Tetradymite	Bi₂Te₃	2	123325,123330	276
Tetrahedrite-(Zn) ()*	Tetrahedrite	Cu₆(Cu₄Zn₂)Sb₄S₁₃	1	123333	5317

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...