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Mochowgryn manganese mine, Llanycil, Gwynedd, Wales, UKi
Regional Level Types
Mochowgryn manganese mineMine (Inactive)
LlanycilCommunity
GwyneddCounty
WalesCountry
UKCountry

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PhotosMapsSearch
02729260017361179088107.jpg
Hollandite, etc.

Mochowgryn manganese mine, Llanycil, Gwynedd, Wales, UK
02729260017361179088107.jpg
Hollandite, etc.

Mochowgryn manganese mine, Llanycil, Gwynedd, Wales, UK
03891890017361179095350.jpg
Hollandite, etc.

Mochowgryn manganese mine, Llanycil, Gwynedd, Wales, UK
Latitude & Longitude (WGS84):
52° 56' 48'' North , 3° 46' 42'' West
Latitude & Longitude (decimal):
52.94676,-3.77845
GeoHash:
G#: gcmm4n8t5
GRN:
N36W02
UK National Grid Reference:
SH806403
Type:
Mine (Inactive) - last checked 2024
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Llan Ffestiniog864 (2017)10.2km
Trawsfynydd628 (2017)10.9km
Blaenau-Ffestiniog4,005 (2016)11.9km
Bala1,974 (2017)12.8km
Betws-y-Coed1,200 (2015)16.5km
Mindat Locality ID:
448643
Long-form identifier:
mindat:1:2:448643:8
GUID (UUID V4):
0
Other/historical names associated with this locality:
Moel Machowgryn


A small unsuccessful manganese mine/trial on a small hill of the same name on the western flank of Arenig Fach.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Detailed Mineral List:

ⓘ Cryptomelane
Formula: K(Mn4+7Mn3+)O16
References:
Tom Cotterell/Amgueddfa Cymru - Museum Wales.Identified by Paul De Bondt: XRD, XRF
ⓘ Hollandite
Formula: Ba(Mn4+6Mn3+2)O16
References:
Tom Cotterell/Amgueddfa Cymru - Museum Wales.Identified by Paul De Bondt: XRD, XRF

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘCryptomelane4.DK.05aK(Mn4+7Mn3+)O16
ⓘHollandite4.DK.05aBa(Mn4+6Mn3+2)O16

List of minerals for each chemical element

OOxygen
Oⓘ CryptomelaneK(Mn74+Mn3+)O16
Oⓘ HollanditeBa(Mn64+Mn23+)O16
KPotassium
Kⓘ CryptomelaneK(Mn74+Mn3+)O16
MnManganese
Mnⓘ CryptomelaneK(Mn74+Mn3+)O16
Mnⓘ HollanditeBa(Mn64+Mn23+)O16
BaBarium
Baⓘ HollanditeBa(Mn64+Mn23+)O16

Other Regions, Features and Areas containing this locality

UK

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