Faroe Islands (original) (raw)

ⓘ Allophane

Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O

ⓘ Analcime

Formula: Na(AlSi2O6) · H2O

Localities: Reported from at least 17 localities in this region.

Habit: trapazohedra to 3cm in diameter

Colour: transparent

ⓘ 'Apophyllite Group'

Formula: A B4[Si8O22]X · 8H2O

Localities: Reported from at least 49 localities in this region.

ⓘ Beidellite

Formula: (Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O

ⓘ Calcite

Formula: CaCO3

Localities: Reported from at least 30 localities in this region.

ⓘ Calcite var. Iceland Spar

Formula: CaCO3

ⓘ Celadonite

Formula: K(MgFe3+◻)(Si4O10)(OH)2

Localities: Reported from at least 9 localities in this region.

ⓘ 'Chabazite'

Localities: Reported from at least 61 localities in this region.

Habit: rhombohedra to 4cm across

ⓘ 'Chabazite var. Phacolite'

Localities:

Skútin Cave, Nólsoy, Tórshavn Municipality, Streymoy, Streymoy Region, Faroe Islands
Hvannasundsvegur Quarry, Depil, Borðoy, Norðoyar Region, Faroe Islands
Hustoft Quarry, Lamba, Eysturoy, Eysturoy Region, Faroe Islands

Habit: crystals to25mm

Colour: white

ⓘ Chabazite-Ca

Formula: (Ca,K2,Na2)2[Al2Si4O12]2 · 12H2O

Localities:

Uppi á Dal, Kunoy, Kunoy, Norðoyar Region, Faroe Islands
Gamlarett Quarry, Kirkjubøur, Streymoy, Streymoy Region, Faroe Islands
Selatrađ Quarry, Morskranes, Eysturoy, Eysturoy Region, Faroe Islands
Fútaklettur, Sandavágur, Vágar, Vágar Region, Faroe Islands
Strendur Quarry, Kolbeinagjógv, Eysturoy, Eysturoy Region, Faroe Islands

ⓘ Chabazite-Na

Formula: (Na2,K2,Ca,Sr,Mg)2[Al2Si4O12]2 · 12H2O

ⓘ Chalcocite

Formula: Cu2S

ⓘ Copper

Formula: Cu

Localities:

Nólsoy, Tórshavn Municipality, Streymoy, Streymoy Region, Faroe Islands
Suðuroy, Suðuroy Region, Faroe Islands
Strond Quarry, Ánirnar, Borðoy, Norðoyar Region, Faroe Islands
Glyvursnes Quarry, Argir, Streymoy, Streymoy Region, Faroe Islands
Forðbiarnipa, Suðuroy, Suðuroy Region, Faroe Islands

ⓘ Cowlesite

Formula: CaAl2Si3O10 · 6H2O

Habit: radial aggregates 1-2mm in diameter

Colour: gray

Description: lining vugs in basalt

ⓘ Cristobalite

Formula: SiO2

Description: As content in opal

ⓘ Epistilbite

Formula: CaAl2Si6O16 · 5H2O

ⓘ 'Erionite Subgroup'

Formula: M2[Al4Si14O36] · 15H2O

Habit: compact fiborus needles to 5mm long

Colour: white

ⓘ Fluorapatite

Formula: Ca5(PO4)3F

Description: White spherule on heulandite crystal base.

ⓘ 'Gismondine Subgroup'

Localities:

Sundalagið, Streymoy, Streymoy Region, Faroe Islands
Uppi á Dal, Kunoy, Kunoy, Norðoyar Region, Faroe Islands
Krossdalur, Múli, Borðoy, Norðoyar Region, Faroe Islands

ⓘ Gyrolite

Formula: NaCa16Si23AlO60(OH)8 · 14H2O

Localities: Reported from at least 13 localities in this region.

ⓘ Halloysite

Formula: Al2(Si2O5)(OH)4

ⓘ Harmotome

Formula: Ba2(Si12Al4)O32 · 12H2O

ⓘ 'Heulandite Subgroup'

Formula: (Na/Ca/K)5-6[Al8-9 Si27-28 O72] · nH2O

Localities: Reported from at least 61 localities in this region.

ⓘ Laumontite

Formula: CaAl2Si4O12 · 4H2O

Localities: Reported from at least 6 localities in this region.

ⓘ 'Lévyne'

Localities: Reported from at least 15 localities in this region.

Habit: eceptionaly large, twinnined crystals

Colour: white

ⓘ Lévyne-Ca (TL)

Formula: (Ca,Na2,K2)[Al2Si4O12] · 6H2O

Localities:

Dalsnipa, Dalur, Sandoy, Sandoy Region, Faroe Islands
Nesvik Quarry, Nesvik, Streymoy, Streymoy Region, Faroe Islands
Rossafelli, Nesvik, Streymoy, Streymoy Region, Faroe Islands
Strendur Quarry, Kolbeinagjógv, Eysturoy, Eysturoy Region, Faroe Islands

Habit: plates

Colour: water clear

ⓘ 'Limonite'

ⓘ Mesolite

Formula: Na2Ca2Si9Al6O30 · 8H2O

Localities: Reported from at least 38 localities in this region.

ⓘ Mordenite

Formula: (Na2,Ca,K2)4(Al8Si40)O96 · 28H2O

Localities: Reported from at least 6 localities in this region.

Habit: corse needles 5cm long and 2cm in diameter

ⓘ Natrolite

Formula: Na2Al2Si3O10 · 2H2O

ⓘ Okenite

Formula: Ca10Si18O46 · 18H2O

ⓘ Opal

Formula: SiO2 · nH2O

Localities:

Strond Quarry, Ánirnar, Borðoy, Norðoyar Region, Faroe Islands
Faroe Islands
Hoyvik, Streymoy, Streymoy Region, Faroe Islands
Tórshavn, Tórshavn Municipality, Streymoy, Streymoy Region, Faroe Islands
Gøtueið, Syðrugøta, Eysturoy, Eysturoy Region, Faroe Islands

ⓘ Opal var. Opal-CT

Formula: SiO2 · nH2O

ⓘ Pectolite

Formula: NaCa2Si3O8(OH)

ⓘ 'Phillipsite Subgroup'

Localities: Reported from at least 7 localities in this region.

ⓘ Pyrite

Formula: FeS2

ⓘ Quartz

Formula: SiO2

Localities: Reported from at least 19 localities in this region.

ⓘ Quartz var. Agate

Localities:

Strond Quarry, Ánirnar, Borðoy, Norðoyar Region, Faroe Islands
Gjáarbotnur, Skælingur, Streymoy, Streymoy Region, Faroe Islands
Húsafjall, Funningur, Eysturoy, Eysturoy Region, Faroe Islands
Sumbiar Tunnel, Sumba, Suðuroy, Suðuroy Region, Faroe Islands

ⓘ Quartz var. Chalcedony

Formula: SiO2

Localities: Reported from at least 17 localities in this region.

ⓘ Saponite

Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O

ⓘ Scolecite

Formula: CaAl2Si3O10 · 3H2O

Localities:

Suðuroy, Suðuroy Region, Faroe Islands
Forðbiarnipa, Suðuroy, Suðuroy Region, Faroe Islands
Eysturoy, Eysturoy Region, Faroe Islands
Tórshavn, Tórshavn Municipality, Streymoy, Streymoy Region, Faroe Islands
Tunlar Norður um Fjall, Árnafjørður, Borðoy, Norðoyar Region, Faroe Islands

ⓘ 'Smectite Group'

Formula: A0.3D2-3[T4O10]Z2 · nH2O

ⓘ Stellerite

Formula: Ca4(Si28Al8)O72 · 28H2O

ⓘ 'Stilbite Subgroup'

Formula: M6-7[Al8-9Si27-28O72] · nH2O

Localities: Reported from at least 71 localities in this region.

ⓘ Thomsonite-Ca

Formula: NaCa2[Al5Si5O20] · 6H2O

Localities: Reported from at least 17 localities in this region.

ⓘ 'Thomsonite Subgroup'

Localities: Reported from at least 40 localities in this region.

ⓘ Tridymite

Formula: SiO2

Description: as content in opal