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Trencrom Hill, Trencrom, Ludgvan, Cornwall, England, UK

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Latitude & Longitude (WGS84): 50° 10' 28'' North , 5° 28' 43'' West
Latitude & Longitude (decimal): 50.17458,-5.47887
GeoHash:G#: gbuj7q42j
UK National Grid Reference:SW517363
Other regions containing this locality:St Ives Mining District, Cornwall, England, UK
St Just Mining Region, Cornwall, England, UK
Devon and Cornwall metalliferous mining district, England, UK
Köppen climate type:Cfb : Temperate oceanic climate


Lands End Granite

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Standard Detailed Strunz Dana Chemical Elements

Mineral List


7 valid minerals.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ Andalusite
Formula: Al2(SiO4)O
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ 'Biotite'
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ Corundum
Formula: Al2O3
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ Corundum var: Sapphire
Formula: Al2O3
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ 'Granite'
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ Orthoclase
Formula: K(AlSi3O8)
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ 'Pegmatite'
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ Quartz
Formula: SiO2
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.
ⓘ 'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘ'Corundum'4.CB.05Al2O3
ⓘvar: Sapphire4.CB.05Al2O3
ⓘ'Quartz'4.DA.05SiO2
Group 9 - Silicates
ⓘ'Albite'9.FA.35Na(AlSi3O8)
ⓘ'Andalusite'9.AF.10Al2(SiO4)O
ⓘ'Muscovite'9.EC.15KAl2(AlSi3O10)(OH)2
ⓘ'Orthoclase'9.FA.30K(AlSi3O8)
ⓘSchorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.
ⓘ'Biotite'-
ⓘ'Granite'-
ⓘ'Pegmatite'-
ⓘTourmaline-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
ⓘCorundum4.3.1.1Al2O3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
ⓘAndalusite52.2.2b.1Al2(SiO4)O
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
ⓘSchorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
ⓘMuscovite71.2.2a.1KAl2(AlSi3O10)(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
ⓘQuartz75.1.3.1SiO2
Group 76 - TECTOSILICATES Al-Si Framework
Al-Si Framework with Al-Si frameworks
ⓘAlbite76.1.3.1Na(AlSi3O8)
ⓘOrthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Rocks, etc.
ⓘ'Biotite'-
ⓘCorundum
var: Sapphire		-Al2O3
ⓘ'Granite'-
ⓘ'Pegmatite'-
ⓘ'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
BBoron
Bⓘ SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Bⓘ TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ AndalusiteAl2(SiO4)O
Oⓘ CorundumAl2O3
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ OrthoclaseK(AlSi3O8)
Oⓘ QuartzSiO2
Oⓘ Corundum (var: Sapphire)Al2O3
Oⓘ SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Oⓘ TourmalineA(D3)G6(T6O18)(BO3)3X3Z
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ AndalusiteAl2(SiO4)O
Alⓘ CorundumAl2O3
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ OrthoclaseK(AlSi3O8)
Alⓘ Corundum (var: Sapphire)Al2O3
Alⓘ SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ AndalusiteAl2(SiO4)O
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ OrthoclaseK(AlSi3O8)
Siⓘ QuartzSiO2
Siⓘ SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ OrthoclaseK(AlSi3O8)
FeIron
Feⓘ SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)

References

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Wilson, A. C. (1975). An Occurrence of Sapphire in the Land's End Granite, Cornwall. HM Stationery Office.


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