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Dartmoor Forest, West Devon, Devon, England, UKi
Regional Level Types
Dartmoor ForestCivil Parish
West DevonBorough
DevonCounty
EnglandConstituent Country
UKCountry

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Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

16 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Andersonite
Formula: Na2Ca(UO2)(CO3)3 · 6H2O
Habit: Distorted rhombohedra, indistinct; also massive, encrusting
Colour: Yellowish
Fluorescence: Reacts strongly to Long Wave UV light, emitting a diagnostic bluish-green.
Description: Sparse, microscopic grains scattered across weathered surfaces associated with other fluorescent material. Visible as tiny points of blue-green fluorescence under Long Wave UV. Only observable at x45 and above.
β“˜ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
Habit: Tabular, highly metamict; encrusting
Colour: Pale, dull green to greenish yellow
Fluorescence: Rects strongly under Long Wave UV light with characteristic yellowish green.
Description: Dull green to yellow metamict crystal groups found on weathered granite surfaces, also crustiform coatings. Crystals to 0.5mm
β“˜ Bassetite ?
Formula: Fe2+(UO2)2(PO4)2 · 10H2O
Habit: Somewhat earthy in appearance
Colour: dun-coloured
Fluorescence: none
Description: Inferred presence of Bassetite comes from the presence of a non-fluorescent, dun-coloured, earthy encrustation in direct contact with uraninite and weathered pyrite grains in the granite.
β“˜ Becquerelite ?
Formula: Ca(UO2)6O4(OH)6 · 8H2O
Habit: Indeterminate - semi-crustose.
Colour: brownish-yellow, appears very pale due to size of crystals.
Fluorescence: Reacts under Long Wave UV: dim brownish orange
Description: Appears as sparse, somewhat earthy encrustations of miniscule, brownish-yellow crystals on more exposed and weathered surfaces. As with other uranium minerals, this is associated with the weathering of uraninite in the granite. Crystals are transparent and sufficiently small to give the impression of a pale colouration at moderate magnification (x45).
β“˜ Boltwoodite
Formula: (K,Na)(UO2)(SiO3OH) · 1.5H2O
Habit: Radial acicular groups to ~0.3mm across; also earthy, encrusting.
Colour: Yellowish-brown to dull orange
Fluorescence: Reacts weakly under Long Wave UV, emitting a dull brownish colour.
Description: Minute earthy crusts in miarolitic cavities associated with uraninite, also with gummite crusts.
β“˜ Cassiterite
Formula: SnO2
Localities: Reported from at least 9 localities in this region.
β“˜ 'Feldspar Group'
β“˜ Fluorite
Formula: CaF2
Habit: cubic; compact and irregular
Colour: White, purple to almost black
Fluorescence: Barest hint of purple fluorescence under Long Wave UV
Description: Compact masses partially filling cracks in the granite, associated with tourmaline veins and miarolitic cavities. Material has been observed to form crystals about 5mm across, crystal faces rare. Colour varies between white and purple, sometimes almost to purple-black where associated with smoky quartz and radioactive residues. Colours are zoned in many crystals.
β“˜ 'Gummite'
Habit: Massive
Colour: Brownish - may be mistaken for iron-stains.
Description: Brown haloes associated with uraninite, often dusted with SalΓ©eite.
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
β“˜ Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6H2O
Habit: Tabular, highly metamict; encrusting
Colour: Pale, dull green to greenish yellow
Fluorescence: Rects strongly under Long Wave UV light with characteristic yellowish green.
Description: Dull green to yellow metamict crystal groups found on weathered granite surfaces, also crustiform coatings. Crystals to 0.5mm
β“˜ Opal
Formula: SiO2 · nH2O
β“˜ Quartz
Formula: SiO2
Localities: Reported from at least 9 localities in this region.
β“˜ Quartz var. Smoky Quartz
Formula: SiO2
Habit: Prismatic to 2.5mm across. Terminations rare.
Colour: Dark brown; grey; almost black
Description: Protruding into or traversing miarolitic pockets in tourmaline veins in the granite, these dark quartz crystals are associated with some traces of radioactive residues. They are minerallogically significant only in being indicative of high levels of uranium mineralisation at some earlier time.
β“˜ SalΓ©eite
Formula: Mg(UO2)2(PO4)2 · 10H2O
Habit: Tabular; crustiform
Colour: Lemon yellow
Fluorescence: Brilliant yellow reaction under Long Wave UV. Some yellow reaction under blue (LED) light.
Description: Minute crystals and crusts on surfaces within recent cracks in miarolitic granite, also within some miarolitic voids. Associated with uraninite and gummite.
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜ Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Habit: tabular
Colour: Green.
Fluorescence: none
Description: Occasional tabular crystals associated with other uranium minerals, also as fine encrustations. Tabular crystals are typical for the species.
β“˜ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
References:
Bernie Millington
β“˜ Uraninite
Formula: UO2
Habit: Irregular, granular; massive
Colour: Black, brownish-black
Description: Minute grains (to about 1.5mm)disseminated through miarolytic granite, often included within feldspar crystals. A small, metamict halo surrounding the grains is diagnostic. Where broken, the uraninite gives rise to a halo of brownish stain (gummite) and other secondary minerals (salΓ©eite, probably uranophane and possibly autunite etc.) Also, massive in the single, visible vein within the quarry itself.
β“˜ Uranophane
Formula: Ca(UO2)2(SiO3OH)2 · 5H2O
Habit: Massive
Colour: Brilliant lemon yellow.
Fluorescence: Not fluorescent under UV light.
Description: Minute crusts of lemon yellow, massive uranophane in cavities in tourmalinised granite. Only observed at the foot of the dumps.

Gallery:

SnO2β“˜ Cassiterite
SiO2 · nH2Oβ“˜ Opal
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)β“˜ Schorl
AD3G6 (T6O18)(BO3)3X3Zβ“˜ 'Tourmaline'

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Quartz4.DA.05SiO2
β“˜var. Smoky Quartz4.DA.05SiO2
β“˜Opal4.DA.10SiO2 Β· nH2O
β“˜Cassiterite4.DB.05SnO2
β“˜Uraninite4.DL.05UO2
β“˜Becquerelite ?4.GB.10Ca(UO2)6O4(OH)6 Β· 8H2O
Group 5 - Nitrates and Carbonates
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
β“˜Andersonite5.ED.30Na2Ca(UO2)(CO3)3 Β· 6H2O
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Torbernite8.EB.05Cu(UO2)2(PO4)2 Β· 12H2O
β“˜SalΓ©eite8.EB.05Mg(UO2)2(PO4)2 Β· 10H2O
β“˜Autunite8.EB.05Ca(UO2)2(PO4)2 Β· 10-12H2O
β“˜Meta-autunite8.EB.10Ca(UO2)2(PO4)2 Β· 6H2O
β“˜Bassetite ?8.EB.10Fe2+(UO2)2(PO4)2 Β· 10H2O
Group 9 - Silicates
β“˜Boltwoodite9.AK.15(K,Na)(UO2)(SiO3OH) Β· 1.5H2O
β“˜Uranophane9.AK.15Ca(UO2)2(SiO3OH)2 Β· 5H2O
β“˜Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified
β“˜'Gummite'-
β“˜'Feldspar Group'-
β“˜'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
Hβ“˜ AndersoniteNa2Ca(UO2)(CO3)3 · 6H2O
Hβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Hβ“˜ BassetiteFe2+(UO2)2(PO4)2 · 10H2O
Hβ“˜ BecquereliteCa(UO2)6O4(OH)6 · 8H2O
Hβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Hβ“˜ OpalSiO2 · nH2O
Hβ“˜ SalΓ©eiteMg(UO2)2(PO4)2 · 10H2O
Hβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Hβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
Hβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
BBoron
Bβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Bβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
CCarbon
Cβ“˜ AndersoniteNa2Ca(UO2)(CO3)3 · 6H2O
Cβ“˜ MalachiteCu2(CO3)(OH)2
OOxygen
Oβ“˜ AndersoniteNa2Ca(UO2)(CO3)3 · 6H2O
Oβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Oβ“˜ BassetiteFe2+(UO2)2(PO4)2 · 10H2O
Oβ“˜ BecquereliteCa(UO2)6O4(OH)6 · 8H2O
Oβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Oβ“˜ CassiteriteSnO2
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Oβ“˜ OpalSiO2 · nH2O
Oβ“˜ QuartzSiO2
Oβ“˜ SalΓ©eiteMg(UO2)2(PO4)2 · 10H2O
Oβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ Quartz var. Smoky QuartzSiO2
Oβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
Oβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oβ“˜ UraniniteUO2
Oβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
FFluorine
Fβ“˜ FluoriteCaF2
NaSodium
Naβ“˜ AndersoniteNa2Ca(UO2)(CO3)3 · 6H2O
Naβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Naβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
MgMagnesium
Mgβ“˜ SalΓ©eiteMg(UO2)2(PO4)2 · 10H2O
AlAluminium
Alβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Siβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Siβ“˜ OpalSiO2 · nH2O
Siβ“˜ QuartzSiO2
Siβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ Quartz var. Smoky QuartzSiO2
Siβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
PPhosphorus
Pβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Pβ“˜ BassetiteFe2+(UO2)2(PO4)2 · 10H2O
Pβ“˜ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Pβ“˜ SalΓ©eiteMg(UO2)2(PO4)2 · 10H2O
Pβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
KPotassium
Kβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
CaCalcium
Caβ“˜ AndersoniteNa2Ca(UO2)(CO3)3 · 6H2O
Caβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Caβ“˜ BecquereliteCa(UO2)6O4(OH)6 · 8H2O
Caβ“˜ FluoriteCaF2
Caβ“˜ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Caβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O
FeIron
Feβ“˜ BassetiteFe2+(UO2)2(PO4)2 · 10H2O
Feβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CuCopper
Cuβ“˜ MalachiteCu2(CO3)(OH)2
Cuβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
SnTin
Snβ“˜ CassiteriteSnO2
UUranium
Uβ“˜ AndersoniteNa2Ca(UO2)(CO3)3 · 6H2O
Uβ“˜ AutuniteCa(UO2)2(PO4)2 · 10-12H2O
Uβ“˜ BassetiteFe2+(UO2)2(PO4)2 · 10H2O
Uβ“˜ BecquereliteCa(UO2)6O4(OH)6 · 8H2O
Uβ“˜ Boltwoodite(K,Na)(UO2)(SiO3OH) · 1.5H2O
Uβ“˜ Meta-autuniteCa(UO2)2(PO4)2 · 6H2O
Uβ“˜ SalΓ©eiteMg(UO2)2(PO4)2 · 10H2O
Uβ“˜ TorberniteCu(UO2)2(PO4)2 · 12H2O
Uβ“˜ UraniniteUO2
Uβ“˜ UranophaneCa(UO2)2(SiO3OH)2 · 5H2O

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Dartmoor_Forest
Wikidata ID:Q1924474
GeoNames ID:7297597

Localities in this Region

UK
UK

Other Regions, Features and Areas that Intersect

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
UK

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