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Scawt Hill, Larne, Co. Antrim, Northern Ireland, UKi
Regional Level Types
Scawt HillHill
LarneTown
Co. AntrimCounty
Northern IrelandConstituent Country
UKCountry

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PhotosMapsSearch
Latitude & Longitude (WGS84):
54° 54' 37'' North , 5° 54' 55'' West
Latitude & Longitude (decimal):
54.91050,-5.91538
GeoHash:
G#: gcgb3khsc
GRN:
N37W03
UK National Grid Reference:
NW540573
Type:
Hill
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Larne18,421 (2016)9.2km
Carnlough1,427 (2016)10.2km
Glenariff1,286 (2016)18.3km
Ballyclare9,472 (2016)18.5km
Broughshane2,581 (2016)18.9km
Mindat Locality ID:
2452
Long-form identifier:
mindat:1:2:2452:8
GUID (UUID V4):
2684f2ee-5774-46d4-ab08-852619920abc


Contact-metamorphosed limestones and dolostones intruded by diabase.
Famous for being the type locality of various hydrated Ca-silicates.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


29 valid minerals. 6 (TL) - type locality of valid minerals. 1 erroneous literature entry.

Rock Types Recorded

Note: 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:

ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ Afwillite
Formula: Ca3(HSiO4)2 · 2H2O
Description: Occurs in a contact zone between limestone and dolerite.
ⓘ Åkermanite
Formula: Ca2Mg[Si2O7]
ⓘ Analcime
Formula: Na(AlSi2O6) · H2O
ⓘ Anorthite
Formula: Ca(Al2Si2O8)
ⓘ Anorthite var. Labradorite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Augite var. Titanium-bearing Augite
Formula: (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
ⓘ Bredigite (TL)
Formula: Ca7Mg(SiO4)4
Type Locality:
ⓘ Calcite
Formula: CaCO3
ⓘ Cebollite
Formula: Ca5Al2(SiO4)3(OH)4
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Ettringite
Formula: Ca6Al2(SO4)3(OH)12 · 26H2O
Description: Occurs in a contact zone between limestone and dolerite.
ⓘ Ferrobustamite
Formula: CaFe2+(Si2O6)
Description: In American Mineralogist, Volume 60, pages 209-212, 1975, the highest iron content of wollastonite is 2.23 percent FeO, in the wollastonite composition field.
ⓘ Gehlenite
Formula: Ca2Al[AlSiO7]
ⓘ Hydrocalumite (TL)
Formula: Ca4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Type Locality:
Description: Occurs in a contaxct zone between limestone and dolerite.
ⓘ Larnite (TL)
Formula: Ca2SiO4
Type Locality:
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ 'Melilite Group'
Formula: Ca2M(XSiO7)
ⓘ Okenite
Formula: Ca10Si18O46 · 18H2O
ⓘ Pectolite
Formula: NaCa2Si3O8(OH)
ⓘ Perovskite
Formula: CaTiO3
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ Plombièrite
Formula: [Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O)
ⓘ Portlandite (TL)
Formula: Ca(OH)2
Type Locality:
Description: Occurs in a contact zone between limestone and dolerite.
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Quartz
Formula: SiO2
ⓘ Rankinite (TL)
Formula: Ca3Si2O7
Type Locality:
ⓘ Scawtite (TL)
Formula: Ca7(Si3O9)2CO3 · 2H2O
Type Locality:
Habit: Tilley & Hey (1930): plates flattened in the plane of the principal cleavage. Frequently these form subparallel or slightly divergent clusters. Owing to mutual interference and intergrowth with the surrounding minerals no well-defined crystals can be isolated. The largest individuals met with do not exceed 1.5 mm. in length.
Colour: colourless with vitreous lustre
ⓘ Spinel
Formula: MgAl2O4
ⓘ Spurrite
Formula: Ca5(SiO4)2(CO3)
ⓘ 'Thomsonite Subgroup'
ⓘ Titanite
Formula: CaTi(SiO4)O
ⓘ Tobermorite
Formula: Ca4Si6O17(H2O)2 · (Ca · 3H2O)
ⓘ Wollastonite
Formula: Ca3(Si3O9)
ⓘ Xonotlite
Formula: Ca6(Si6O17)(OH)2

Gallery:

Ca7(Si3O9)2CO3 · 2H2Oⓘ Scawtite (TL)

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘSpinel4.BB.05MgAl2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘPerovskite4.CC.30CaTiO3
ⓘQuartz4.DA.05SiO2
ⓘPortlandite (TL)4.FE.05Ca(OH)2
ⓘHydrocalumite (TL)4.FL.10Ca4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘEttringite7.DG.15Ca6Al2(SO4)3(OH)12 · 26H2O
Group 9 - Silicates
ⓘLarnite (TL)9.AD.05Ca2SiO4
ⓘBredigite (TL)9.AD.20Ca7Mg(SiO4)4
ⓘTitanite9.AG.15CaTi(SiO4)O
ⓘAfwillite9.AG.75Ca3(HSiO4)2 · 2H2O
ⓘSpurrite9.AH.15Ca5(SiO4)2(CO3)
ⓘGehlenite9.BB.10Ca2Al[AlSiO7]
ⓘCebollite9.BB.10Ca5Al2(SiO4)3(OH)4
ⓘÅkermanite9.BB.10Ca2Mg[Si2O7]
ⓘRankinite (TL)9.BC.15Ca3Si2O7
ⓘScawtite (TL)9.CK.15Ca7(Si3O9)2CO3 · 2H2O
ⓘDiopside9.DA.15CaMgSi2O6
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘvar. Titanium-bearing Augite9.DA.15(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘWollastonite9.DG.05Ca3(Si3O9)
ⓘPectolite9.DG.05NaCa2Si3O8(OH)
ⓘFerrobustamite ?9.DG.05CaFe2+(Si2O6)
ⓘPlombièrite9.DG.08[Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O)
ⓘTobermorite9.DG.10Ca4Si6O17(H2O)2 · (Ca · 3H2O)
ⓘXonotlite9.DG.35Ca6(Si6O17)(OH)2
ⓘOkenite9.EA.40Ca10Si18O46 · 18H2O
ⓘAnorthite
var. Labradorite		9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
ⓘ9.FA.35Ca(Al2Si2O8)
ⓘAnalcime9.GB.05Na(AlSi2O6) · H2O
Unclassified
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Thomsonite Subgroup'-
ⓘ'Melilite Group'-Ca2M(XSiO7)

List of minerals for each chemical element

HHydrogen
Hⓘ AfwilliteCa3(HSiO4)2 · 2H2O
Hⓘ AnalcimeNa(AlSi2O6) · H2O
Hⓘ CebolliteCa5Al2(SiO4)3(OH)4
Hⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
Hⓘ HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Hⓘ OkeniteCa10Si18O46 · 18H2O
Hⓘ PectoliteNaCa2Si3O8(OH)
Hⓘ Plombièrite[Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O)
Hⓘ PortlanditeCa(OH)2
Hⓘ ScawtiteCa7(Si3O9)2CO3 · 2H2O
Hⓘ TobermoriteCa4Si6O17(H2O)2 · (Ca · 3H2O)
Hⓘ XonotliteCa6(Si6O17)(OH)2
CCarbon
Cⓘ CalciteCaCO3
Cⓘ HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Cⓘ ScawtiteCa7(Si3O9)2CO3 · 2H2O
Cⓘ SpurriteCa5(SiO4)2(CO3)
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ AfwilliteCa3(HSiO4)2 · 2H2O
Oⓘ ÅkermaniteCa2Mg[Si2O7]
Oⓘ AnalcimeNa(AlSi2O6) · H2O
Oⓘ AnorthiteCa(Al2Si2O8)
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BredigiteCa7Mg(SiO4)4
Oⓘ CalciteCaCO3
Oⓘ CebolliteCa5Al2(SiO4)3(OH)4
Oⓘ DiopsideCaMgSi2O6
Oⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
Oⓘ FerrobustamiteCaFe2+(Si2O6)
Oⓘ GehleniteCa2Al[AlSiO7]
Oⓘ HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Oⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Oⓘ LarniteCa2SiO4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ OkeniteCa10Si18O46 · 18H2O
Oⓘ PectoliteNaCa2Si3O8(OH)
Oⓘ PerovskiteCaTiO3
Oⓘ Plombièrite[Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O)
Oⓘ PortlanditeCa(OH)2
Oⓘ QuartzSiO2
Oⓘ RankiniteCa3Si2O7
Oⓘ ScawtiteCa7(Si3O9)2CO3 · 2H2O
Oⓘ SpinelMgAl2O4
Oⓘ SpurriteCa5(SiO4)2(CO3)
Oⓘ TitaniteCaTi(SiO4)O
Oⓘ TobermoriteCa4Si6O17(H2O)2 · (Ca · 3H2O)
Oⓘ WollastoniteCa3(Si3O9)
Oⓘ XonotliteCa6(Si6O17)(OH)2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Oⓘ Melilite GroupCa2M(XSiO7)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ AnalcimeNa(AlSi2O6) · H2O
Naⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Naⓘ PectoliteNaCa2Si3O8(OH)
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Naⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
MgMagnesium
Mgⓘ ÅkermaniteCa2Mg[Si2O7]
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BredigiteCa7Mg(SiO4)4
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ SpinelMgAl2O4
Mgⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
AlAluminium
Alⓘ AnalcimeNa(AlSi2O6) · H2O
Alⓘ AnorthiteCa(Al2Si2O8)
Alⓘ CebolliteCa5Al2(SiO4)3(OH)4
Alⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
Alⓘ GehleniteCa2Al[AlSiO7]
Alⓘ HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Alⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Alⓘ SpinelMgAl2O4
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Alⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ AfwilliteCa3(HSiO4)2 · 2H2O
Siⓘ ÅkermaniteCa2Mg[Si2O7]
Siⓘ AnalcimeNa(AlSi2O6) · H2O
Siⓘ AnorthiteCa(Al2Si2O8)
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BredigiteCa7Mg(SiO4)4
Siⓘ CebolliteCa5Al2(SiO4)3(OH)4
Siⓘ DiopsideCaMgSi2O6
Siⓘ FerrobustamiteCaFe2+(Si2O6)
Siⓘ GehleniteCa2Al[AlSiO7]
Siⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Siⓘ LarniteCa2SiO4
Siⓘ OkeniteCa10Si18O46 · 18H2O
Siⓘ PectoliteNaCa2Si3O8(OH)
Siⓘ Plombièrite[Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O)
Siⓘ QuartzSiO2
Siⓘ RankiniteCa3Si2O7
Siⓘ ScawtiteCa7(Si3O9)2CO3 · 2H2O
Siⓘ SpurriteCa5(SiO4)2(CO3)
Siⓘ TitaniteCaTi(SiO4)O
Siⓘ TobermoriteCa4Si6O17(H2O)2 · (Ca · 3H2O)
Siⓘ WollastoniteCa3(Si3O9)
Siⓘ XonotliteCa6(Si6O17)(OH)2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Siⓘ Melilite GroupCa2M(XSiO7)
SSulfur
Sⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
ClChlorine
Clⓘ HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
CaCalcium
Caⓘ AfwilliteCa3(HSiO4)2 · 2H2O
Caⓘ ÅkermaniteCa2Mg[Si2O7]
Caⓘ AnorthiteCa(Al2Si2O8)
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ BredigiteCa7Mg(SiO4)4
Caⓘ CalciteCaCO3
Caⓘ CebolliteCa5Al2(SiO4)3(OH)4
Caⓘ DiopsideCaMgSi2O6
Caⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
Caⓘ FerrobustamiteCaFe2+(Si2O6)
Caⓘ GehleniteCa2Al[AlSiO7]
Caⓘ HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Caⓘ Anorthite var. Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Caⓘ LarniteCa2SiO4
Caⓘ OkeniteCa10Si18O46 · 18H2O
Caⓘ PectoliteNaCa2Si3O8(OH)
Caⓘ PerovskiteCaTiO3
Caⓘ Plombièrite[Ca4Si6O16(OH)2 · 2H2O] · (Ca · 5H2O)
Caⓘ PortlanditeCa(OH)2
Caⓘ RankiniteCa3Si2O7
Caⓘ ScawtiteCa7(Si3O9)2CO3 · 2H2O
Caⓘ SpurriteCa5(SiO4)2(CO3)
Caⓘ TitaniteCaTi(SiO4)O
Caⓘ TobermoriteCa4Si6O17(H2O)2 · (Ca · 3H2O)
Caⓘ WollastoniteCa3(Si3O9)
Caⓘ XonotliteCa6(Si6O17)(OH)2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Caⓘ Melilite GroupCa2M(XSiO7)
TiTitanium
Tiⓘ PerovskiteCaTiO3
Tiⓘ TitaniteCaTi(SiO4)O
Tiⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ FerrobustamiteCaFe2+(Si2O6)
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Augite var. Titanium-bearing Augite(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Scawt_Hill
Wikidata ID:Q7430650

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
Ireland (island)Island
North Atlantic Igneous ProvinceLarge Igneous Province

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

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Tilley, C.E. (1929) On larnite (calcium orthosilicate, a new mineral) and its associated minerals from the limestone contact-zone of Scawt Hill, Co. Antrim. Mineralogical Magazine: 22(125): 77-86.
Tilley, C.E. (1929) On melilite as a product of interaction of limestone and basaltic liquid. Geological Magazine: 66(8): 347-353.
Tilley, C.E., Hey, M.H. (1930) Scawtite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine: 22(128): 222-224.
Tilley, C.E., Harwood, H.F. (1931) The Dolerite-Chalk Contact of Scawt Hill, Co. Antrim. The Production of Basic Alkali-Rocks by the Assimilation of Limestone by Basaltic Magma. Mineralogical Magazine: 22(132): 439-468.
Shand, S.J. (1931) The Dolerite-Chalk Contact of Scawt Hill. Geological Magazine: 68(6): 288-288.
Tilley, C.E. (1933) Portlandite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine: 23(142): 419-420.
Tilley, C.E., Alderman, A.R. (1934) Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineralogical Magazine: 23: 513-518.
Tilley, C.E., Megaw, H.D., Hey, M.H. (1934) Hydrocalumite (4CaO.Al2O3.12H2O), a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine: 23(146): 607-615.
Tilley, C.E. (1937) Wollastonite solid solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine: 24(158): 569-572.
Tilley, C.E. (1942) Tricalcium disilicate (rankinite), a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine: 26(176): 190-197.
Tilley, C.E. (1948) On iron-wollastonites in contact-skarns: an example from Skye. American Mineralogist: 33(11-12): 736-738.
Tilley, C.E., Vincent, H.C.G. (1948) The occurrence of an orthorhombic high-temperature form of Ca2SiO4 (bredigite) in the Scawt Hill contact-zone and as a constituent of slags. Mineralogical Magazine: 28(200): 255-271.
Murdoch, Joseph (1955) Scawtite from Crestmore, California. American Mineralogist: 40(5-6): 505-509 (referring to scawtite from the type locality (Tilley and Hey, 1930)).
McConnell, J.D.C. (1955) The hydration of larnite (β−Ca2SiO4) and bredigite (α1−Ca2SiO4) and the properties of the resulting gelatinous mineral plombierite. Mineralogical Magazine: 30(229): 672-680.
Harker, R.I. (1965) Scawtite and its synthesis. Mineralogical Magazine: 34(268): 232-236.
www.habitas.org.uk (n.d.) http://www.habitas.org.uk/escr/summary.asp?item=1130
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