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Trequean (Trequeen), Breage, Cornwall, England, UKi
Regional Level Types
Trequean (Trequeen)Vein
BreageCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 5' 32'' North , 5° 21' 1'' West
Latitude & Longitude (decimal):
50.09227,-5.35031
GeoHash:
G#: gbuhyr008
GRN:
N34W03
UK National Grid Reference:
SW604268
Type:
Vein
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Breage471 (2017)2.2km
Porthleven3,059 (2017)2.6km
Germoe175 (2017)3.3km
Helston12,184 (2017)5.8km
Leedstown267 (2017)7.6km
Mindat Locality ID:
1390
Long-form identifier:
mindat:1:2:1390:4
GUID (UUID V4):
0


Tristramite occurs as a direct replacement of vein pitchblende at Trequean.




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
ⓘUraninite
var. Pitchblende		4.DL.05UO2
ⓘ4.DL.05UO2
Group 8 - Phosphates, Arsenates and Vanadates
ⓘTristramite8.CJ.45(Ca,U,Fe)(PO4,SO4) · 2H2O

List of minerals for each chemical element

HHydrogen
Hⓘ Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2O
OOxygen
Oⓘ Uraninite var. PitchblendeUO2
Oⓘ Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2O
Oⓘ UraniniteUO2
PPhosphorus
Pⓘ Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2O
SSulfur
Sⓘ Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2O
CaCalcium
Caⓘ Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2O
FeIron
Feⓘ Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2O
UUranium
Uⓘ Uraninite var. PitchblendeUO2
Uⓘ Tristramite(Ca,U,Fe)(PO4,SO4) · 2H2O
Uⓘ UraniniteUO2

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.

References

Atkin, D., Basham, I. R., Bowles, J. F. W. (1983) Tristramite, a new calcium uranium phosphate of the rhabdophane group. Mineralogical Magazine, 47 (344) 393-396 doi:10.1180/minmag.1983.047.344.18
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