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Scawt Hill, Larne, Co. Antrim, Northern Ireland, UK

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Latitude & Longitude (WGS84): 54° 54' 37'' North , 5° 54' 55'' West
Latitude & Longitude (decimal): 54.91050,-5.91538
GeoHash:G#: gcgb3khsc
UK National Grid Reference:NW540573
Locality type:Hill
Köppen climate type:Cfb : Temperate oceanic climate


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

Regions containing this locality

North Atlantic Igneous Province

Large Igneous Province - 394 mineral species & varietal names listed

Ireland (island)

Island - 488 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


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

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:

Aegirine
Formula: NaFe3+Si2O6
Reference: Tilley, C. E., & Alderman, A. R. (1934). Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineral Mag, 23, 513-518.
Afwillite
Formula: Ca3(HSiO4)2 · 2H2O
Description: Occurs in a contact zone between limestone and dolerite.
Reference: TILLEY, C. E. (1930). An association of afwillite and spurrite. Geological Magazine, 67, 168-169; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 590; Strübel, Zimmer: "Lexikon der Minerale", 2nd Ed., 1991.; Mineralogical Magazine 1942 26 : 190-196
Åkermanite
Formula: Ca2Mg(Si2O7)
Reference: Handbook of Mineralogy
'Albite-Anorthite Series'
Reference: Tilley, C.E. (1937) Wollastonite Solid Solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine; September 1937 v. 24; no. 158; p. 569-572. (http://rruff.info/uploads/MM24_569.pdf)
Analcime
Formula: Na(AlSi2O6) · H2O
Reference: Tilley, C.E. (1937) Wollastonite Solid Solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine; September 1937 v. 24; no. 158; p. 569-572. (http://rruff.info/uploads/MM24_569.pdf)
Anorthite
Formula: Ca(Al2Si2O8)
Reference: Tilley, C.E. (1937) Wollastonite Solid Solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine; September 1937 v. 24; no. 158; p. 569-572. (http://rruff.info/uploads/MM24_569.pdf)
Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
Reference: C. E. Tilley and H. F. Harwood (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; March 1931 v. 22; no. 132; p. 439-468
Augite var: Titanian Augite
Formula: (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Reference: Tilley, C.E. (1937) Wollastonite Solid Solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine; September 1937 v. 24; no. 158; p. 569-572. (http://rruff.info/uploads/MM24_569.pdf)
'Basalt'
Reference: http://www.habitas.org.uk/escr/site.asp?Item=1130
Bredigite (TL)
Formula: Ca7Mg(SiO4)4
Reference: American Mineralogist: 33: 786; McConnell, J. D. C. (1955). The hydration of larnite (fi-Ca2SiO~) and bredigite (al-Ca2Si04) and the properties of the resulting gelatinous mineral plombierite.
Calcite
Formula: CaCO3
Reference: Tilley, C.E. and Hey, M.H. (1930) Scawtite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 22, n° 128, 222-224.; Harker, R.I. (1965) Scawtite and its synthesis. Mineralogical Magazine, vol. 34, n° 268, 232-236.
Cebollite
Formula: Ca5Al2(SiO4)3(OH)4
Reference: http://rruff.geo.arizona.edu/doclib/hom/cebollite.pdf.
'Chalk'
Reference: http://www.habitas.org.uk/escr/site.asp?Item=1130
Diopside
Formula: CaMgSi2O6
Reference: Tilley, C. E., & Alderman, A. R. (1934). Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineral Mag, 23, 513-518.
'Dolerite'
Reference: Tilley, C.E. and Hey, M.H. (1930) Scawtite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 22, n° 128, 222-224.
Ettringite
Formula: Ca6Al2(SO4)3(OH)12 · 26H2O
Description: Occurs in a contact zone between limestone and dolerite.
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 590.; Mineralogical Magazine 1942 26 : 190-196
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.
Reference: American Mineralogist, Volume 60, pages 209-212, 1975
'Flint'
Reference: Tilley, C.E. (1937) Wollastonite Solid Solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine; September 1937 v. 24; no. 158; p. 569-572. (http://rruff.info/uploads/MM24_569.pdf)
Gehlenite
Formula: Ca2Al(AlSiO7)
Reference: American Mineralogist: 33: 786
Hydrocalumite (TL)
Formula: Ca4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Description: Occurs in a contaxct zone between limestone and dolerite.
Reference: Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 590.
'Labradorite'
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
Reference: Tilley, C.E. (1937) Wollastonite Solid Solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine; September 1937 v. 24; no. 158; p. 569-572. (http://rruff.info/uploads/MM24_569.pdf)
Larnite (TL)
Formula: Ca2SiO4
Reference: 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, 77-86.; American Mineralogist: 33: 786; Mineralogical Magazine 1942 26 : 190-196; Tilley, C. E., & Alderman, A. R. (1934). Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineral Mag, 23, 513-518.; McConnell, J. D. C. (1955). The hydration of larnite (fi-Ca2SiO~) and bredigite (al-Ca2Si04) and the properties of the resulting gelatinous mineral plombierite.
'Limestone'
Reference: Tilley, C.E. and Hey, M.H. (1930) Scawtite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 22, n° 128, 222-224.
Magnetite
Formula: Fe2+Fe3+2O4
Reference: American Mineralogist: 33: 786; Tilley, C. E., & Alderman, A. R. (1934). Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineral Mag, 23, 513-518.
'Melilite Group'
Formula: Ca2M(XSiO7)
Reference: Tilley, C.E. and Hey, M.H. (1930) Scawtite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 22, n° 128, 222-224.; Tilley, C.E. (1942) Tricalcium disilicate (rankinite), a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 26, n° 176, 190-197.; Fleischer, M. (1948) New mineral names. American Mineralogist: 33: 786.; Harker, R.I. (1965) Scawtite and its synthesis. Mineralogical Magazine, vol. 34, n° 268, 232-236.
Okenite
Formula: Ca10Si18O46 · 18H2O
Reference: Tilley, C. E., & Alderman, A. R. (1934). Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineral Mag, 23, 513-518.
'Olivine dolerite'
Reference: http://www.habitas.org.uk/escr/site.asp?Item=1130
Pectolite
Formula: NaCa2Si3O8(OH)
Reference: Tilley, C. E., & Alderman, A. R. (1934). Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineral Mag, 23, 513-518.
Perovskite
Formula: CaTiO3
Reference: American Mineralogist: 33: 786
Plombièrite
Formula: [Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)
Reference: McConnell, J. D. C. (1955). The hydration of larnite (fi-Ca2SiO~) and bredigite (al-Ca2Si04) and the properties of the resulting gelatinous mineral plombierite.
Portlandite (TL)
Formula: Ca(OH)2
Description: Occurs in a contact zone between limestone and dolerite.
Reference: Mineralogical Magazine (1933): 23: 419-420; Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 590.
'Pyroxene Group'
Reference: Tilley, C.E. (1937) Wollastonite Solid Solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine; September 1937 v. 24; no. 158; p. 569-572. (http://rruff.info/uploads/MM24_569.pdf)
Quartz
Formula: SiO2
Reference: Tilley, C. E., & Alderman, A. R. (1934). Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineral Mag, 23, 513-518.
Rankinite (TL)
Formula: Ca3Si2O7
Reference: Mineralogical Magazine 1942 26 : 190-196
Scawtite (TL)
Formula: Ca7(Si3O9)2CO3 · 2H2O
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
Reference: Tilley, C.E. and Hey, M.H. (1930) Scawtite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 22, n° 128, 222-224.; Murdoch, J. (1955) Scawtite from Crestmore, California. American Mineralogist: 40: 505-509 (referring to scawtite from the type locality (Tilley and Hey, 1930)).; Harker, R.I. (1965) Scawtite and its synthesis. Mineralogical Magazine, vol. 34, n° 268, 232-236.
Spinel
Formula: MgAl2O4
Reference: Tilley, C. E., & Alderman, A. R. (1934). Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineral Mag, 23, 513-518.
Spurrite
Formula: Ca5(SiO4)2(CO3)
Reference: Tilley, C.E. (1942) Tricalcium disilicate (rankinite), a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 26, n° 176, 190-197.; Fleischer, M. (1948) New mineral names. American Mineralogist: 33: 786.; Harker, R.I. (1965) Scawtite and its synthesis. Mineralogical Magazine, vol. 34, n° 268, 232-236.
'Thomsonite'
Reference: Tilley, C.E. and Hey, M.H. (1930) Scawtite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 22, n° 128, 222-224.
Titanite
Formula: CaTi(SiO4)O
Reference: Tilley, C.E. (1937) Wollastonite Solid Solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine; September 1937 v. 24; no. 158; p. 569-572. (http://rruff.info/uploads/MM24_569.pdf)
Tobermorite
Formula: [Ca4Si6O17 · 2H2O]·(Ca·3H2O)
Reference: https://e-rocks.com/item/csw205175/larnite-tobermorite-xontolite
Wollastonite
Formula: CaSiO3
Reference: Mineralogical Magazine 1942 26 : 190-196; Tilley, C. E., & Alderman, A. R. (1934). Progressive metasomatism in the flint nodules of the Scawt Hill contact-zone. Mineral Mag, 23, 513-518.
Xonotlite
Formula: Ca6(Si6O17)(OH)2
Reference: https://e-rocks.com/item/csw205175/larnite-tobermorite-xontolite

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Hydrocalumite' (TL)4.FL.10Ca4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
'Magnetite'4.BB.05Fe2+Fe3+2O4
'Perovskite'4.CC.30CaTiO3
'Portlandite' (TL)4.FE.05Ca(OH)2
'Quartz'4.DA.05SiO2
'Spinel'4.BB.05MgAl2O4
Group 5 - Nitrates and Carbonates
'Calcite'5.AB.05CaCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Ettringite'7.DG.15Ca6Al2(SO4)3(OH)12 · 26H2O
Group 9 - Silicates
'Aegirine'9.DA.25NaFe3+Si2O6
'Afwillite'9.AG.75Ca3(HSiO4)2 · 2H2O
'Analcime'9.GB.05Na(AlSi2O6) · H2O
'Anorthite'9.FA.35Ca(Al2Si2O8)
'Augite'9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
var: Titanian Augite9.DA.15(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
'Bredigite' (TL)9.AD.20Ca7Mg(SiO4)4
'Cebollite'9.BB.10Ca5Al2(SiO4)3(OH)4
'Diopside'9.DA.15CaMgSi2O6
'Ferrobustamite' ?9.DG.05CaFe2+(Si2O6)
'Gehlenite'9.BB.10Ca2Al(AlSiO7)
'Labradorite'9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
'Larnite' (TL)9.AD.05Ca2SiO4
'Okenite'9.EA.40Ca10Si18O46 · 18H2O
'Pectolite'9.DG.05NaCa2Si3O8(OH)
'Plombièrite'9.DG.08[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)
'Rankinite' (TL)9.BC.15Ca3Si2O7
'Scawtite' (TL)9.CK.15Ca7(Si3O9)2CO3 · 2H2O
'Spurrite'9.AH.15Ca5(SiO4)2(CO3)
Titanite9.AG.15CaTi(SiO4)O
Tobermorite9.DG.10[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
Wollastonite9.DG.05CaSiO3
Xonotlite9.DG.35Ca6(Si6O17)(OH)2
'Åkermanite'9.BB.10Ca2Mg(Si2O7)
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
'Basalt'-
'Chalk'-
'Dolerite'-
'Flint'-
'Limestone'-
'Melilite Group'-Ca2M(XSiO7)
'Olivine dolerite'-
'Pyroxene Group'-
'Thomsonite'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Perovskite4.3.3.1CaTiO3
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
X(OH)2
Portlandite (TL)6.2.1.4Ca(OH)2
Miscellaneous
Hydrocalumite (TL)6.4.4.1Ca4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
Group 7 - MULTIPLE OXIDES
AB2X4
Magnetite7.2.2.3Fe2+Fe3+2O4
Spinel7.2.1.1MgAl2O4
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
Miscellaneous
Ettringite31.10.2.1Ca6Al2(SO4)3(OH)12 · 26H2O
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Bredigite (TL)51.4.1.1Ca7Mg(SiO4)4
Insular SiO4 Groups Only with cations in >[6] coordination
Larnite (TL)51.5.1.1Ca2SiO4
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Afwillite52.4.7.1Ca3(HSiO4)2 · 2H2O
Titanite52.4.3.1CaTi(SiO4)O
Group 53 - NESOSILICATES Insular SiO4 Groups and Other Anions or Complex Cations
Insular SiO4 Groups and Other Anions of Complex Cations with (CO3)
Spurrite53.1.1.1Ca5(SiO4)2(CO3)
Group 55 - SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
Si2O7 Groups, Generally with no Additional Anions with cations in [7] coordination
Rankinite (TL)55.3.1.1Ca3Si2O7
Si2O7 Groups, Generally with No Additional Anions with cations in [8] and lower coordination
Gehlenite55.4.1.2Ca2Al(AlSiO7)
Åkermanite55.4.1.1Ca2Mg(Si2O7)
Group 64 - CYCLOSILICATES Rings with Other Anions and Insular Silicate Groups
Rings with Other Anions and Insular Silicate Groups: 3-membered rings with other anion groups
Scawtite (TL)64.2.1.1Ca7(Si3O9)2CO3 · 2H2O
Group 65 - INOSILICATES Single-Width,Unbranched Chains,(W=1)
Single-Width Unbranched Chains, W=1 with chains P=2
Aegirine65.1.3c.2NaFe3+Si2O6
Augite65.1.3a.3(CaxMgyFez)(Mgy1Fez1)Si2O6
Diopside65.1.3a.1CaMgSi2O6
Single-Width Unbranched Chains, W=1 with chains P=3
Ferrobustamite ?65.2.1.3CaFe2+(Si2O6)
Pectolite65.2.1.4aNaCa2Si3O8(OH)
Wollastonite65.2.1.1cCaSiO3
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Ca-Na subgroup
Xonotlite66.3.1.1Ca6(Si6O17)(OH)2
Group 72 - PHYLLOSILICATES Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with 3-, 4-, or 5-membered rings and 8-membered rings
Okenite72.3.2.5Ca10Si18O46 · 18H2O
Plombièrite72.3.2.3[Ca4Si6O16(OH)2 · 2H2O]·(Ca·5H2O)
Tobermorite72.3.2.1[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Group 77 - TECTOSILICATES Zeolites
Zeolite group - True zeolites
Analcime77.1.1.1Na(AlSi2O6) · H2O
Group 78 - Unclassified Silicates
Miscellaneous
Cebollite78.1.1.1Ca5Al2(SiO4)3(OH)4
Unclassified Minerals, Rocks, etc.
'Albite-Anorthite Series'-
Anorthite-Ca(Al2Si2O8)
Augite
var: Titanian Augite
-(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
'Basalt'-
'Chalk'-
'Dolerite'-
'Flint'-
'Labradorite'-(Ca,Na)[Al(Al,Si)Si2O8]
'Limestone'-
'Melilite Group'-Ca2M(XSiO7)
'Olivine dolerite'-
'Pyroxene Group'-
'Thomsonite'-

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 Tobermorite[Ca4Si6O17 · 2H2O]·(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 Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
O LarniteCa2SiO4
O MagnetiteFe2+Fe23+O4
O Melilite GroupCa2M(XSiO7)
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 Augite (var: Titanian Augite)(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
O TitaniteCaTi(SiO4)O
O Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
O WollastoniteCaSiO3
O XonotliteCa6(Si6O17)(OH)2
NaSodium
Na AegirineNaFe3+Si2O6
Na AnalcimeNa(AlSi2O6) · H2O
Na Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Na PectoliteNaCa2Si3O8(OH)
Na Augite (var: Titanian 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: Titanian 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 Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Al SpinelMgAl2O4
Al Augite (var: Titanian 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 Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Si LarniteCa2SiO4
Si Melilite GroupCa2M(XSiO7)
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 Augite (var: Titanian Augite)(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Si TitaniteCaTi(SiO4)O
Si Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
Si WollastoniteCaSiO3
Si XonotliteCa6(Si6O17)(OH)2
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 Labradorite(Ca,Na)[Al(Al,Si)Si2O8]
Ca LarniteCa2SiO4
Ca Melilite GroupCa2M(XSiO7)
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 Augite (var: Titanian Augite)(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Ca TitaniteCaTi(SiO4)O
Ca Tobermorite[Ca4Si6O17 · 2H2O]·(Ca·3H2O)
Ca WollastoniteCaSiO3
Ca XonotliteCa6(Si6O17)(OH)2
TiTitanium
Ti PerovskiteCaTiO3
Ti Augite (var: Titanian Augite)(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
Ti TitaniteCaTi(SiO4)O
FeIron
Fe AegirineNaFe3+Si2O6
Fe Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Fe FerrobustamiteCaFe2+(Si2O6)
Fe MagnetiteFe2+Fe23+O4
Fe Augite (var: Titanian Augite)(Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6
BaBarium
Ba BredigiteCa7Mg(SiO4)4

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Paleogene
23.03 - 66 Ma



ID: 2036193
Unnamed Extrusive Rocks, Palaeogene

Age: Paleogene (23.03 - 66 Ma)

Lithology: Mafic lava and mafic tuff

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

Paleocene
56 - 66 Ma



ID: 3133914
Palaeocene undifferentiated

Age: Paleocene (56 - 66 Ma)

Lithology: Volcanic

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Cretaceous
66 - 145 Ma



ID: 3187383
Mesozoic sedimentary rocks

Age: Cretaceous (66 - 145 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
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, vol. 22, n° 125, 77-86.
Tilley, C.E. (1929) On melilite as a product of interaction of limestone and basaltic liquid. Geological Magazine, vol. 66, n° 8, 347-353.
Tilley, C.E. and Hey, M.H. (1930) Scawtite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 22, n° 128, 222-224.
Tilley, C.E. and 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, vol. 22, n° 132, 439-468.
Tilley, C.E. (1933) Portlandite, a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 23, n° 142, 419-420.
Tilley, C.E., Megaw, H.D., and Hey, M.H. (1934) Hydrocalumite (4CaO.Al2O3.12H2O), a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 23, n° 146, 607-615.
Tilley, C.E. (1937) Wollastonite solid solutions from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 24, n° 158, 569-572.
Tilley, C.E. (1942) Tricalcium disilicate (rankinite), a new mineral from Scawt Hill, Co. Antrim. Mineralogical Magazine, vol. 26, n° 176, 190-197.
Tilley, C.E. (1948) On iron-wollastonites in contact-skarns: an example from Skye. American Mineralogist, 33, 736-738.
Tilley, C.E. and 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, vol. 28, n° 200, 255-271.
Murdoch, J. (1955) Scawtite from Crestmore, California. American Mineralogist: 40: 505-509 (referring to scawtite from the type locality (Tilley and Hey, 1930)).
Harker, R.I. (1965) Scawtite and its synthesis. Mineralogical Magazine, vol. 34, n° 268, 232-236.

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