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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Buttern Hill Placers, Altarnun, Cornwall, England, UKi
Regional Level Types
Buttern Hill PlacersGroup of Placers
AltarnunCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 36' 30'' North , 4° 34' 41'' West
Latitude & Longitude (decimal):
50.60858,-4.57820
GeoHash:
G#: gbuxzv422
GRN:
N34W03
UK National Grid Reference:
SX176820
Type:
Group of Placers
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Camelford2,335 (2017)7.3km
Delabole1,647 (2017)11.0km
Boscastle641 (2017)11.7km
Tintagel1,028 (2017)13.6km
Launceston8,910 (2017)15.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
British Micromount Society, Devon and Cornwall Branch MeetingsLiskeard, Cornwall19km
Mindat Locality ID:
842
Long-form identifier:
mindat:1:2:842:1
GUID (UUID V4):
0


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘIlmenite4.CB.05Fe2+TiO3
Group 8 - Phosphates, Arsenates and Vanadates
ⓘPlumbogummite8.BL.10PbAl3(PO4)(PO3OH)(OH)6

List of minerals for each chemical element

HHydrogen
Hⓘ PlumbogummitePbAl3(PO4)(PO3OH)(OH)6
OOxygen
Oⓘ IlmeniteFe2+TiO3
Oⓘ PlumbogummitePbAl3(PO4)(PO3OH)(OH)6
AlAluminium
Alⓘ PlumbogummitePbAl3(PO4)(PO3OH)(OH)6
PPhosphorus
Pⓘ PlumbogummitePbAl3(PO4)(PO3OH)(OH)6
TiTitanium
Tiⓘ IlmeniteFe2+TiO3
FeIron
Feⓘ IlmeniteFe2+TiO3
PbLead
Pbⓘ PlumbogummitePbAl3(PO4)(PO3OH)(OH)6

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Guadalupian
ⓘ Major polymetallic mineralization~270 MaCornwall, England, UK
   Cisuralian
ⓘ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
ⓘ Greisenization (latest age)~280 MaCornwall, England, UK
ⓘ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
ⓘ Formation of metallized pegmatites~285 MaCornwall, England, UK
ⓘ Greisenization (earliest age)~285 MaCornwall, England, UK
ⓘ Emplacement of major plutons~295 MaCornwall, England, UK

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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