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Knill Quarry, St Ives, Cornwall, England, UKi
Regional Level Types
Knill QuarryQuarry
St IvesCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Key
Latitude & Longitude (WGS84):
50° 11' 47'' North , 5° 28' 56'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SW516387
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
St Ives9,966 (2017)1.4km
Uny Lelant1,056 (2017)3.3km
Hayle8,210 (2017)4.5km
Marazion1,294 (2017)7.9km
Madron626 (2017)9.2km


A small, abandoned quarry in a granite dyke with pegmatite pockets, now largely backfilled and overgrown.
Located NW of Knill's Monument.

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


6 valid minerals.

Detailed Mineral List:

Corundum
Formula: Al2O3
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
Hematite
Formula: Fe2O3
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 48
Hematite var: Specularite
Formula: Fe2O3
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 48
Orthoclase
Formula: K(AlSi3O8)
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 47
Quartz
Formula: SiO2
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 47
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 47
Topaz
Formula: Al2(SiO4)(F,OH)2
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), p. 53.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
Corundum4.CB.05Al2O3
Hematite4.CB.05Fe2O3
var: Specularite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 9 - Silicates
Orthoclase9.FA.30K(AlSi3O8)
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Topaz9.AF.35Al2(SiO4)(F,OH)2

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Corundum4.3.1.1Al2O3
Hematite4.3.1.2Fe2O3
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] coordination only
Topaz52.3.1.1Al2(SiO4)(F,OH)2
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 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
Orthoclase76.1.1.1K(AlSi3O8)
Unclassified Minerals, Mixtures, etc.
Hematite
var: Specularite
-Fe2O3

List of minerals for each chemical element

HHydrogen
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H TopazAl2(SiO4)(F,OH)2
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
OOxygen
O CorundumAl2O3
O QuartzSiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O OrthoclaseK(AlSi3O8)
O Hematite (var: Specularite)Fe2O3
O TopazAl2(SiO4)(F,OH)2
O HematiteFe2O3
FFluorine
F TopazAl2(SiO4)(F,OH)2
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al CorundumAl2O3
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Al OrthoclaseK(AlSi3O8)
Al TopazAl2(SiO4)(F,OH)2
SiSilicon
Si QuartzSiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si OrthoclaseK(AlSi3O8)
Si TopazAl2(SiO4)(F,OH)2
KPotassium
K OrthoclaseK(AlSi3O8)
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Hematite (var: Specularite)Fe2O3
Fe HematiteFe2O3

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), 158 pp.

Other Regions, Features and Areas containing this locality

British IslesGroup of Islands
Eurasian PlateTectonic Plate
UK

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