Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsThe Rock H. Currier Digital LibraryGeologic Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

St Kilda, Outer Hebrides, Scotland, UKi
Regional Level Types
St KildaArchipelago
Outer HebridesCouncil Area
ScotlandCountry
UKCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Mindat Locality ID:
22373
Long-form identifier:
mindat:1:2:22373:8
GUID (UUID V4):
cd85b2d1-45dd-40d3-a009-7a77f80627a0


Island group west of Outer Hebrides; Tertiary Intrusive complex. Permission for access must be obtained from the Nature Conservancy and the National Trust for Scotland before visiting the islands.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

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“˜ 'Allanite Group'
Formula: (A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
β“˜ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
β“˜ Anatase
Formula: TiO2
Habit: tabular
Colour: dark green
β“˜ Anorthite
Formula: Ca(Al2Si2O8)
β“˜ Anorthite var. Bytownite
Formula: (Ca,Na)[Al(Al,Si)Si2O8]
β“˜ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ 'Chabazite'
β“˜ Chevkinite-(Ce)
Formula: Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
Habit: prismatic to acicular, up to 0.2mm
Colour: Red-brown (pleochroic) in thin section; appears black and near-opaque in hand specimens
Description: First British occurrence for this species. Mostly observed in thin sections. Can be seen with x10 loupe in hand specimens, but easily mistaken for amphibole or edge-views of dark mica (although the latter is almost absent in most of the chevkinite-bearing rocks of St Kilda). Red haloes are commonly seen around specimens in the Conachair granite.
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ 'Fayalite-Forsterite Series'
β“˜ 'Feldspar Group'
β“˜ Fluorite
Formula: CaF2
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
Habit: octaheda & massive (rock-forming)
Colour: black
Description: Magnetite is abundant as a rock-forming component in the basic rocks of St Kilda, and is also common as sharply euhedral lustrous octahedra in vugs in the Conachair Granite.
β“˜ Orthoclase
Formula: K(AlSi3O8)
β“˜ 'Orthopyroxene Subgroup'
β“˜ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
β“˜ Prehnite
Formula: Ca2Al2Si3O10(OH)2
β“˜ Quartz
Formula: SiO2
β“˜ Rutile
Formula: TiO2
β“˜ Scolecite
Formula: CaAl2Si3O10 · 3H2O
β“˜ 'Silica'
β“˜ Spinel
Formula: MgAl2O4
β“˜ Titanite
Formula: CaTi(SiO4)O
β“˜ Zircon
Formula: Zr(SiO4)
β“˜ Zirkelite
Formula: (Ti,Ca,Zr)O2-x

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Magnetite4.BB.05Fe2+Fe3+2O4
β“˜Spinel4.BB.05MgAl2O4
β“˜Quartz4.DA.05SiO2
β“˜Rutile4.DB.05TiO2
β“˜Anatase4.DD.05TiO2
β“˜Zirkelite4.DL.05(Ti,Ca,Zr)O2-x
Group 9 - Silicates
β“˜Zircon9.AD.30Zr(SiO4)
β“˜Titanite9.AG.15CaTi(SiO4)O
β“˜Chevkinite-(Ce)9.BE.70Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
β“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜Augite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
β“˜Orthoclase9.FA.30K(AlSi3O8)
β“˜Anorthite
var. Bytownite
9.FA.35(Ca,Na)[Al(Al,Si)Si2O8]
β“˜9.FA.35Ca(Al2Si2O8)
β“˜Scolecite9.GA.05CaAl2Si3O10 Β· 3H2O
Unclassified
β“˜'Orthopyroxene Subgroup'-
β“˜'Silica'-
β“˜'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
β“˜'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
β“˜'Fayalite-Forsterite Series'-
β“˜'Feldspar Group'-
β“˜'Chabazite'-
β“˜'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜'Allanite Group'-(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)

List of minerals for each chemical element

HHydrogen
Hβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hβ“˜ PrehniteCa2Al2Si3O10(OH)2
Hβ“˜ ScoleciteCaAl2Si3O10 · 3H2O
Hβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
OOxygen
Oβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oβ“˜ AnataseTiO2
Oβ“˜ AnorthiteCa(Al2Si2O8)
Oβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Oβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oβ“˜ MagnetiteFe2+Fe23+O4
Oβ“˜ OrthoclaseK(AlSi3O8)
Oβ“˜ PrehniteCa2Al2Si3O10(OH)2
Oβ“˜ QuartzSiO2
Oβ“˜ RutileTiO2
Oβ“˜ ScoleciteCaAl2Si3O10 · 3H2O
Oβ“˜ SpinelMgAl2O4
Oβ“˜ TitaniteCaTi(SiO4)O
Oβ“˜ ZirconZr(SiO4)
Oβ“˜ Zirkelite(Ti,Ca,Zr)O2-x
Oβ“˜ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
Oβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
FFluorine
Fβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fβ“˜ FluoriteCaF2
NaSodium
Naβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Naβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgβ“˜ SpinelMgAl2O4
AlAluminium
Alβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alβ“˜ AnorthiteCa(Al2Si2O8)
Alβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Alβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alβ“˜ OrthoclaseK(AlSi3O8)
Alβ“˜ PrehniteCa2Al2Si3O10(OH)2
Alβ“˜ ScoleciteCaAl2Si3O10 · 3H2O
Alβ“˜ SpinelMgAl2O4
Alβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
SiSilicon
Siβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siβ“˜ AnorthiteCa(Al2Si2O8)
Siβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Siβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siβ“˜ OrthoclaseK(AlSi3O8)
Siβ“˜ PrehniteCa2Al2Si3O10(OH)2
Siβ“˜ QuartzSiO2
Siβ“˜ ScoleciteCaAl2Si3O10 · 3H2O
Siβ“˜ TitaniteCaTi(SiO4)O
Siβ“˜ ZirconZr(SiO4)
Siβ“˜ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
Siβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siβ“˜ Allanite Group(A12+REE3+)(M13+M23+M32+)O[Si2O7][SiO4](OH)
ClChlorine
Clβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
KPotassium
Kβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kβ“˜ OrthoclaseK(AlSi3O8)
CaCalcium
Caβ“˜ AnorthiteCa(Al2Si2O8)
Caβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caβ“˜ Anorthite var. Bytownite(Ca,Na)[Al(Al,Si)Si2O8]
Caβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caβ“˜ FluoriteCaF2
Caβ“˜ PrehniteCa2Al2Si3O10(OH)2
Caβ“˜ ScoleciteCaAl2Si3O10 · 3H2O
Caβ“˜ TitaniteCaTi(SiO4)O
Caβ“˜ Zirkelite(Ti,Ca,Zr)O2-x
Caβ“˜ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
TiTitanium
Tiβ“˜ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiβ“˜ AnataseTiO2
Tiβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiβ“˜ RutileTiO2
Tiβ“˜ TitaniteCaTi(SiO4)O
Tiβ“˜ Zirkelite(Ti,Ca,Zr)O2-x
Tiβ“˜ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
FeIron
Feβ“˜ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feβ“˜ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feβ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feβ“˜ MagnetiteFe2+Fe23+O4
Feβ“˜ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2
ZrZirconium
Zrβ“˜ ZirconZr(SiO4)
Zrβ“˜ Zirkelite(Ti,Ca,Zr)O2-x
CeCerium
Ceβ“˜ Chevkinite-(Ce)Ce4(Ti,Fe2+,Fe3+)5O8(Si2O7)2

Geochronology

Mineralization age: Paleocene : 60 Β± 10 Ma to 57 Β± 3 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Paleogene
   Paleocene
β“˜ Granophyric granite57 Β± 3 MaHirta, St Kilda, Outer Hebrides, Scotland, UK
β“˜ Olivine dolerite60 Β± 10 MaHirta, St Kilda, Outer Hebrides, Scotland, UK
β“˜ Basalt60 Β± 10 MaHirta, St Kilda, Outer Hebrides, Scotland, UK

Fossils

There are 1 fossil localities from the PaleoBioDB database within this region.

BETA TEST - These data are provided on an experimental basis and are taken from external databases. Mindat.org has no control currently over the accuracy of these data.

Occurrences1
Youngest Fossil Listed
Oldest Fossil Listed0.01 Ma (Pleistocene)
Fossils from RegionClick here to show the list.
Accepted NameHierarchy Age
Pinguinus impennis
species
Animalia : Chordata : Aves : Charadriiformes : Alcidae : Pinguinus : Pinguinus impennis0.0117 - 0 Ma
Quaternary
Fossil LocalitiesClick to show 1 fossil locality

Localities in this Region

Other Regions, Features and Areas that Intersect

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
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.
 
and/or  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2024, except where stated. Most political location boundaries are Β© OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: May 14, 2024 00:09:35 Page updated: March 5, 2024 04:01:04
Go to top of page