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Terceira, Azores, Portugali
Regional Level Types
TerceiraIsland
AzoresAutonomous Region
PortugalCountry

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PhotosMapsSearch
07295310017397509503991.jpg
Hypsometric map

Terceira, Azores, Portugal
09647370017272268328575.jpg
A view of Monte Brasil

Monte Brasil Peninsula, Sé, Angra do Heroísmo, Terceira, Azores, Portugal
00317920017272268344269.jpg
The exit of Algar do Carvão

Algar do Carvão, Angra do Heroísmo, Terceira, Azores, Portugal
08684490017381910344783.jpg
Hypsometric map

Terceira, Azores, Portugal
09647370017272268328575.jpg
A view of Monte Brasil

Monte Brasil Peninsula, Sé, Angra do Heroísmo, Terceira, Azores, Portugal
00317920017272268344269.jpg
The exit of Algar do Carvão

Algar do Carvão, Angra do Heroísmo, Terceira, Azores, Portugal
02359890017397509513274.jpg
Hypsometric map

Terceira, Azores, Portugal
09647370017272268328575.jpg
A view of Monte Brasil

Monte Brasil Peninsula, Sé, Angra do Heroísmo, Terceira, Azores, Portugal
Area:
401 km2
Type:
Island
Largest Settlements:
PlacePopulation
Angra do Heroísmo12,045 (2018)
Praia da Vitória6,061 (2012)
São Mateus3,757 (2018)
Lajes3,744 (2018)
Ribeirinha2,684 (2018)
Porto Judeu2,501 (2018)
Mindat Locality ID:
154535
Long-form identifier:
mindat:1:2:154535:0
GUID (UUID V4):
0
Other Languages:
View 34 more...
French:
Terceira, Açores, Portugal
German:
Terceira, Azoren, Portugal
Italian:
Terceira, Azzorre, Portogallo
Portuguese:
Ilha da Terceira, Região Autónoma dos Açores, Portugal
Russian:
Терсейра, Азорские острова, Португалия
Simplified Chinese:
特塞拉島, 亚速尔群岛, 葡萄牙
Spanish:
Isla Terceira, Azores, Portugal
Basque:
Terceira, Azoreak
Belarusian:
Тэрсейра, Азорскія астравы, Партугалія
Breton:
Enez Terceira, Azorez
Catalan:
Terceira, Açores, Portugal
Cebuano:
Terceira Island, Azores
Croatian:
Terceira, Azori
Czech:
Terceira, Azory, Portugalsko
Danish:
Terceira, Azorerne, Portugal
Dutch:
Terceira, Azoren, Portugal
Esperanto:
Triainsulo, Acoroj
Estonian:
Terceira, Assoorid, Portugal
Finnish:
Terceira, Azorit, Portugali
Galician:
Terceira, Azores, Portugal
Greek:
Τερσέιρα, Αζόρες, Πορτογαλία
Hebrew:
טרסיירה, האיים האזוריים, פורטוגל
Hindi:
ट्रेसिरा द्वीप, एज़ोरेस, पुर्तगाल
Hungarian:
Terceira, Azori-szigetek, Portugália
Japanese:
テルセイラ島, アゾレス諸島, ポルトガル
Korean:
테르세이라섬, 아소르스 제도, 포르투갈
Latvian:
Terseira, Azoru salas, Portugāle
Lithuanian:
Terseira, Azorai, Portugalija
Macedonian:
Терсеира, Азорски Острови, Португалија
Malay:
Terceira, Azores
Malayalam:
ടെർസീറ ദ്വീപ്
Norwegian (Nynorsk):
Terceira, Asorane
Polish:
Terceira, Azory, Portugalia
Romanian:
Insula Terceira, Azore, Portugalia
Serbo-Croatian:
Terceira, Azori
Slovenian:
Terceira , Azori, Portugalska
Swahili:
Terceira, Azori, Ureno
Swedish:
Terceira, Azorerna, Portugal
Traditional Chinese:
特塞拉島, 亞速爾
Turkish:
Terceira, Azorlar, Portekiz
Ukrainian:
Терсейра, Азорські острови, Португалія


Terceira is an island in the Azores archipelago in the middle of the North Atlantic Ocean; it is one of the larger islands of this archipelago.

It is built from 3 aligned and overlapping stratovolcanoes together with widely distributed monogenetic basaltic vents and flows.

The oldest Cinco Picos volcano completed its main subaerial cone-building activity by c. 380 - 370 ka, the youngest Santa Barbara volcano began erupting prior to 29 ka and has been active historically (e.g. AD 1761) (Weston 1964).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

25 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:

ⓘ Aegirine-augite
Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
ⓘ Aenigmatite
Formula: Na4[Fe2+10Ti2]O4[Si12O36]
ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Albite var. Anorthoclase
Formula: (Na,K)AlSi3O8
ⓘ 'Alkali Feldspar'
ⓘ Allophane
Formula: (Al2O3)(SiO2)1.3-2 · 2.5-3H2O
ⓘ Alunite
Formula: KAl3(SO4)2(OH)6
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
References:
Weston, F. S. (1964). List of recorded volcanic eruptions in the Azores with brief reports. Boletim do Museu e Laboratorio Mineralogico e Geologico da Faculdade de Ciencias, Lisboa, 10, 3-18.
Rosenbaum, M. S. (1974). Basaltic volcanism in south-east Terceira, Azores. Geological Magazine, 111(5), 409-420. doi.org/10.1017/S0016756800039960
Self, S. (1976). The recent volcanology of Terceira, Azores. Journal of the Geological Society, 132(6), 645-666. doi.org/10.1144/gsjgs.132.6.0645
Mungall, J. E., Martin, R. F. (1996) xtreme differentiation of peralkaline rhyolite, Terceira, Azores; a modern analogue of Strange Lake, Labrador?. The Canadian Mineralogist, 34 (4) 769-777
Calvert, A. T., Moore, R. B., McGeehin, J. P., & da Silva, A. M. R. (2006). Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal. Journal of Volcanology and Geothermal Research, 156(1-2), 103-115. doi.org/10.1016/j.jvolgeores.2006.03.016
Gertisser, R., Self, S., Gaspar, J. L., Kelley, S. P., Pimentel, A., Eikenberg, J., ... & Vespa, M. (2010). Ignimbrite stratigraphy and chronology on Terceira Island, Azores. The Geological Society of America, Special Paper, 464, 133-154.
Larrea, P., França, Z., Widom, E., & Lago, M. (2018). Petrology of the Azores Islands. In Volcanoes of the Azores (pp. 197-249). Springer, Berlin, Heidelberg.
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ 'Clinopyroxene Subgroup'
ⓘ Dalyite
Formula: K2ZrSi6O15
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ 'Eudialyte Group'
Formula: [N(1)N(2)N(3)N(4)N(5)]3[M(1.1)M(1.2)]3[M(2.1)M(2.2)M(2.3)]3-6[M(3)M(4)]Z3[Si24O72]Θ4X(1)X(2)
ⓘ Fayalite
Formula: Fe2+2SiO4
ⓘ 'Fayalite-Forsterite Series'
ⓘ Ferrihydrite
Formula: Fe3+10O14(OH)2
ⓘ Ferro-edenite
Formula: NaCa2Fe2+5(Si7Al)O22(OH)2
ⓘ Graphite
Formula: C
ⓘ Hematite
Formula: Fe2O3
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Jarosite
Formula: KFe3+3(SO4)2(OH)6
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ Katophorite
Formula: {Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
ⓘ 'Limonite'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Magnetite var. Titanium-bearing Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
ⓘ 'Microlite Group'
Formula: A2-mTa2X6-wZ-n
References:
Weston, F. S. (1964). List of recorded volcanic eruptions in the Azores with brief reports. Boletim do Museu e Laboratorio Mineralogico e Geologico da Faculdade de Ciencias, Lisboa, 10, 3-18.
Rosenbaum, M. S. (1974). Basaltic volcanism in south-east Terceira, Azores. Geological Magazine, 111(5), 409-420. doi.org/10.1017/S0016756800039960
Self, S. (1976). The recent volcanology of Terceira, Azores. Journal of the Geological Society, 132(6), 645-666. doi.org/10.1144/gsjgs.132.6.0645
Mungall, J. E., Martin, R. F. (1996) xtreme differentiation of peralkaline rhyolite, Terceira, Azores; a modern analogue of Strange Lake, Labrador?. The Canadian Mineralogist, 34 (4) 769-777
Calvert, A. T., Moore, R. B., McGeehin, J. P., & da Silva, A. M. R. (2006). Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal. Journal of Volcanology and Geothermal Research, 156(1-2), 103-115. doi.org/10.1016/j.jvolgeores.2006.03.016
Gertisser, R., Self, S., Gaspar, J. L., Kelley, S. P., Pimentel, A., Eikenberg, J., ... & Vespa, M. (2010). Ignimbrite stratigraphy and chronology on Terceira Island, Azores. The Geological Society of America, Special Paper, 464, 133-154.
Larrea, P., França, Z., Widom, E., & Lago, M. (2018). Petrology of the Azores Islands. In Volcanoes of the Azores (pp. 197-249). Springer, Berlin, Heidelberg.
ⓘ 'Monazite Group'
Formula: REE(PO4)
References:
Weston, F. S. (1964). List of recorded volcanic eruptions in the Azores with brief reports. Boletim do Museu e Laboratorio Mineralogico e Geologico da Faculdade de Ciencias, Lisboa, 10, 3-18.
Rosenbaum, M. S. (1974). Basaltic volcanism in south-east Terceira, Azores. Geological Magazine, 111(5), 409-420. doi.org/10.1017/S0016756800039960
Self, S. (1976). The recent volcanology of Terceira, Azores. Journal of the Geological Society, 132(6), 645-666. doi.org/10.1144/gsjgs.132.6.0645
Mungall, J. E., Martin, R. F. (1996) xtreme differentiation of peralkaline rhyolite, Terceira, Azores; a modern analogue of Strange Lake, Labrador?. The Canadian Mineralogist, 34 (4) 769-777
Calvert, A. T., Moore, R. B., McGeehin, J. P., & da Silva, A. M. R. (2006). Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal. Journal of Volcanology and Geothermal Research, 156(1-2), 103-115. doi.org/10.1016/j.jvolgeores.2006.03.016
Gertisser, R., Self, S., Gaspar, J. L., Kelley, S. P., Pimentel, A., Eikenberg, J., ... & Vespa, M. (2010). Ignimbrite stratigraphy and chronology on Terceira Island, Azores. The Geological Society of America, Special Paper, 464, 133-154.
Larrea, P., França, Z., Widom, E., & Lago, M. (2018). Petrology of the Azores Islands. In Volcanoes of the Azores (pp. 197-249). Springer, Berlin, Heidelberg.
ⓘ Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
ⓘ 'Olivine Group'
Formula: M2SiO4
ⓘ Opal
Formula: SiO2 · nH2O
ⓘ 'Orthopyroxene Subgroup'
ⓘ Pyrite
Formula: FeS2
References:
Weston, F. S. (1964). List of recorded volcanic eruptions in the Azores with brief reports. Boletim do Museu e Laboratorio Mineralogico e Geologico da Faculdade de Ciencias, Lisboa, 10, 3-18.
Rosenbaum, M. S. (1974). Basaltic volcanism in south-east Terceira, Azores. Geological Magazine, 111(5), 409-420. doi.org/10.1017/S0016756800039960
Self, S. (1976). The recent volcanology of Terceira, Azores. Journal of the Geological Society, 132(6), 645-666. doi.org/10.1144/gsjgs.132.6.0645
Mungall, J. E., Martin, R. F. (1996) xtreme differentiation of peralkaline rhyolite, Terceira, Azores; a modern analogue of Strange Lake, Labrador?. The Canadian Mineralogist, 34 (4) 769-777
Calvert, A. T., Moore, R. B., McGeehin, J. P., & da Silva, A. M. R. (2006). Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal. Journal of Volcanology and Geothermal Research, 156(1-2), 103-115. doi.org/10.1016/j.jvolgeores.2006.03.016
Gertisser, R., Self, S., Gaspar, J. L., Kelley, S. P., Pimentel, A., Eikenberg, J., ... & Vespa, M. (2010). Ignimbrite stratigraphy and chronology on Terceira Island, Azores. The Geological Society of America, Special Paper, 464, 133-154.
Larrea, P., França, Z., Widom, E., & Lago, M. (2018). Petrology of the Azores Islands. In Volcanoes of the Azores (pp. 197-249). Springer, Berlin, Heidelberg.
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Quartz
Formula: SiO2
ⓘ Riebeckite
Formula: ◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
ⓘ Sanidine
Formula: K(AlSi3O8)
References:
Weston, F. S. (1964). List of recorded volcanic eruptions in the Azores with brief reports. Boletim do Museu e Laboratorio Mineralogico e Geologico da Faculdade de Ciencias, Lisboa, 10, 3-18.
Rosenbaum, M. S. (1974). Basaltic volcanism in south-east Terceira, Azores. Geological Magazine, 111(5), 409-420. doi.org/10.1017/S0016756800039960
Self, S. (1976). The recent volcanology of Terceira, Azores. Journal of the Geological Society, 132(6), 645-666. doi.org/10.1144/gsjgs.132.6.0645
Mungall, J. E., Martin, R. F. (1996) xtreme differentiation of peralkaline rhyolite, Terceira, Azores; a modern analogue of Strange Lake, Labrador?. The Canadian Mineralogist, 34 (4) 769-777
Calvert, A. T., Moore, R. B., McGeehin, J. P., & da Silva, A. M. R. (2006). Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal. Journal of Volcanology and Geothermal Research, 156(1-2), 103-115. doi.org/10.1016/j.jvolgeores.2006.03.016
Gertisser, R., Self, S., Gaspar, J. L., Kelley, S. P., Pimentel, A., Eikenberg, J., ... & Vespa, M. (2010). Ignimbrite stratigraphy and chronology on Terceira Island, Azores. The Geological Society of America, Special Paper, 464, 133-154.
Larrea, P., França, Z., Widom, E., & Lago, M. (2018). Petrology of the Azores Islands. In Volcanoes of the Azores (pp. 197-249). Springer, Berlin, Heidelberg.
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ 'Sodium Amphibole Subgroup'
Formula: An(Na2)(Z5)(Si8-mAlmO22)(OH,F,Cl)2
ⓘ 'Sodium-Calcium Amphibole Subgroup'
Formula: An(NaCa)(Z2+5-mZ3+m)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2
ⓘ Sulphur
Formula: S8
ⓘ 'Wad'
ⓘ Zircon
Formula: Zr(SiO4)
References:
Weston, F. S. (1964). List of recorded volcanic eruptions in the Azores with brief reports. Boletim do Museu e Laboratorio Mineralogico e Geologico da Faculdade de Ciencias, Lisboa, 10, 3-18.
Rosenbaum, M. S. (1974). Basaltic volcanism in south-east Terceira, Azores. Geological Magazine, 111(5), 409-420. doi.org/10.1017/S0016756800039960
Self, S. (1976). The recent volcanology of Terceira, Azores. Journal of the Geological Society, 132(6), 645-666. doi.org/10.1144/gsjgs.132.6.0645
Mungall, J. E., Martin, R. F. (1996) xtreme differentiation of peralkaline rhyolite, Terceira, Azores; a modern analogue of Strange Lake, Labrador?. The Canadian Mineralogist, 34 (4) 769-777
Calvert, A. T., Moore, R. B., McGeehin, J. P., & da Silva, A. M. R. (2006). Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal. Journal of Volcanology and Geothermal Research, 156(1-2), 103-115. doi.org/10.1016/j.jvolgeores.2006.03.016
Gertisser, R., Self, S., Gaspar, J. L., Kelley, S. P., Pimentel, A., Eikenberg, J., ... & Vespa, M. (2010). Ignimbrite stratigraphy and chronology on Terceira Island, Azores. The Geological Society of America, Special Paper, 464, 133-154.
Larrea, P., França, Z., Widom, E., & Lago, M. (2018). Petrology of the Azores Islands. In Volcanoes of the Azores (pp. 197-249). Springer, Berlin, Heidelberg.

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘGraphite1.CB.05aC
ⓘSulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘ'Microlite Group'4.00.A2-mTa2X6-wZ-n
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘvar. Titanium-bearing Magnetite4.BB.05Fe2+(Fe3+,Ti)2O4
ⓘHematite4.CB.05Fe2O3
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz4.DA.05SiO2
ⓘOpal4.DA.10SiO2 · nH2O
ⓘFerrihydrite4.FE.35Fe3+10O14(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAlunite7.BC.10KAl3(SO4)2(OH)6
ⓘJarosite7.BC.10KFe3+3(SO4)2(OH)6
Group 9 - Silicates
ⓘFayalite9.AC.05Fe2+2SiO4
ⓘZircon9.AD.30Zr(SiO4)
ⓘDiopside9.DA.15CaMgSi2O6
ⓘAegirine-augite9.DA.20(NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6
ⓘFerro-edenite9.DE.15NaCa2Fe2+5(Si7Al)O22(OH)2
ⓘKatophorite9.DE.20{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
ⓘRiebeckite9.DE.25◻[Na2][Fe2+3Fe3+2]Si8O22(OH)2
ⓘAenigmatite9.DH.40Na4[Fe2+10Ti2]O4[Si12O36]
ⓘDalyite9.EA.25K2ZrSi6O15
ⓘMontmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘAllophane9.ED.20(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
ⓘSanidine9.FA.30K(AlSi3O8)
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘvar. Anorthoclase9.FA.35(Na,K)AlSi3O8
Unclassified
ⓘ'Alkali Feldspar'-
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Limonite'-
ⓘ'Monazite Group'-REE(PO4)
ⓘ'Wad'-
ⓘ'Clinopyroxene Subgroup'-
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Orthopyroxene Subgroup'-
ⓘ'Eudialyte Group'-[N(1)N(2)N(3)N(4)N(5)]3[M(1.1)M(1.2)]3[M(2.1)M(2.2)M(2.3)]3-6[M(3)M(4)]Z3[Si24O72]Θ4X(1)X(2)
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Olivine Group'-M2SiO4
ⓘ'Sodium Amphibole Subgroup'-An(Na2)(Z5)(Si8-mAlmO22)(OH,F,Cl)2
ⓘ'Sodium-Calcium Amphibole Subgroup'-An(NaCa)(Z2+5-mZ3+m)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2

List of minerals for each chemical element

HHydrogen
Hⓘ Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Hⓘ AluniteKAl3(SO4)2(OH)6
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Hⓘ FerrihydriteFe103+O14(OH)2
Hⓘ JarositeKFe33+(SO4)2(OH)6
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Hⓘ OpalSiO2 · nH2O
Hⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Hⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Hⓘ Sodium Amphibole SubgroupAn(Na2)(Z5)(Si8-mAlmO22)(OH,F,Cl)2
Hⓘ Sodium-Calcium Amphibole SubgroupAn(NaCa)(Z2+5-mZm3+)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2
CCarbon
Cⓘ GraphiteC
OOxygen
Oⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Oⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Oⓘ AluniteKAl3(SO4)2(OH)6
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ DalyiteK2ZrSi6O15
Oⓘ DiopsideCaMgSi2O6
Oⓘ FayaliteFe22+SiO4
Oⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Oⓘ FerrihydriteFe103+O14(OH)2
Oⓘ HematiteFe2O3
Oⓘ IlmeniteFe2+TiO3
Oⓘ JarositeKFe33+(SO4)2(OH)6
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Monazite GroupREE(PO4)
Oⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Oⓘ OpalSiO2 · nH2O
Oⓘ QuartzSiO2
Oⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Oⓘ SanidineK(AlSi3O8)
Oⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Oⓘ ZirconZr(SiO4)
Oⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Oⓘ Fayalite-Forsterite Series
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Eudialyte Group[N(1)N(2)N(3)N(4)N(5)]3[M(1.1)M(1.2)]3[M(2.1)M(2.2)M(2.3)]3-6[M(3)M(4)]Z3[Si24O72]Θ4X(1)X(2)
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Oⓘ Olivine GroupM2SiO4
Oⓘ Sodium Amphibole SubgroupAn(Na2)(Z5)(Si8-mAlmO22)(OH,F,Cl)2
Oⓘ Sodium-Calcium Amphibole SubgroupAn(NaCa)(Z2+5-mZm3+)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Fⓘ Sodium Amphibole SubgroupAn(Na2)(Z5)(Si8-mAlmO22)(OH,F,Cl)2
Fⓘ Sodium-Calcium Amphibole SubgroupAn(NaCa)(Z2+5-mZm3+)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2
NaSodium
Naⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Naⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Naⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Naⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Naⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Naⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Naⓘ Sodium Amphibole SubgroupAn(Na2)(Z5)(Si8-mAlmO22)(OH,F,Cl)2
Naⓘ Sodium-Calcium Amphibole SubgroupAn(NaCa)(Z2+5-mZm3+)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2
MgMagnesium
Mgⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Mgⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Alⓘ AluniteKAl3(SO4)2(OH)6
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Alⓘ SanidineK(AlSi3O8)
Alⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Alⓘ Sodium Amphibole SubgroupAn(Na2)(Z5)(Si8-mAlmO22)(OH,F,Cl)2
Alⓘ Sodium-Calcium Amphibole SubgroupAn(NaCa)(Z2+5-mZm3+)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2
SiSilicon
Siⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Siⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Allophane(Al2O3)(SiO2)1.3-2 · 2.5-3H2O
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ DalyiteK2ZrSi6O15
Siⓘ DiopsideCaMgSi2O6
Siⓘ FayaliteFe22+SiO4
Siⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Siⓘ OpalSiO2 · nH2O
Siⓘ QuartzSiO2
Siⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Siⓘ SanidineK(AlSi3O8)
Siⓘ ZirconZr(SiO4)
Siⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Siⓘ Fayalite-Forsterite Series
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Eudialyte Group[N(1)N(2)N(3)N(4)N(5)]3[M(1.1)M(1.2)]3[M(2.1)M(2.2)M(2.3)]3-6[M(3)M(4)]Z3[Si24O72]Θ4X(1)X(2)
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
Siⓘ Olivine GroupM2SiO4
Siⓘ Sodium Amphibole SubgroupAn(Na2)(Z5)(Si8-mAlmO22)(OH,F,Cl)2
Siⓘ Sodium-Calcium Amphibole SubgroupAn(NaCa)(Z2+5-mZm3+)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2
PPhosphorus
Pⓘ Monazite GroupREE(PO4)
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ AluniteKAl3(SO4)2(OH)6
Sⓘ JarositeKFe33+(SO4)2(OH)6
Sⓘ PyriteFeS2
Sⓘ SulphurS8
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Clⓘ Sodium Amphibole SubgroupAn(Na2)(Z5)(Si8-mAlmO22)(OH,F,Cl)2
Clⓘ Sodium-Calcium Amphibole SubgroupAn(NaCa)(Z2+5-mZm3+)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2
KPotassium
Kⓘ AluniteKAl3(SO4)2(OH)6
Kⓘ Albite var. Anorthoclase(Na,K)AlSi3O8
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ DalyiteK2ZrSi6O15
Kⓘ JarositeKFe33+(SO4)2(OH)6
Kⓘ SanidineK(AlSi3O8)
CaCalcium
Caⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Caⓘ DiopsideCaMgSi2O6
Caⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Caⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Caⓘ Katophorite{Na}{CaNa}{Mg4Al}[(AlSi7)O22](OH)2
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
Caⓘ Sodium-Calcium Amphibole SubgroupAn(NaCa)(Z2+5-mZm3+)(Si8-(n+m+1)Al(n+m-1)O22)(OH,F,Cl)2
TiTitanium
Tiⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ IlmeniteFe2+TiO3
Tiⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
FeIron
Feⓘ Aegirine-augite(NaaCabFec2+Mgd)(Fee3+AlfFeg2+Mgh)Si2O6
Feⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ FayaliteFe22+SiO4
Feⓘ Ferro-edeniteNaCa2Fe52+(Si7Al)O22(OH)2
Feⓘ FerrihydriteFe103+O14(OH)2
Feⓘ HematiteFe2O3
Feⓘ IlmeniteFe2+TiO3
Feⓘ JarositeKFe33+(SO4)2(OH)6
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ PyriteFeS2
Feⓘ Riebeckite◻[Na2][Fe32+Fe23+]Si8O22(OH)2
Feⓘ Magnetite var. Titanium-bearing MagnetiteFe2+(Fe3+,Ti)2O4
Feⓘ Fayalite-Forsterite Series
ZrZirconium
Zrⓘ DalyiteK2ZrSi6O15
Zrⓘ ZirconZr(SiO4)
TaTantalum
Taⓘ Microlite GroupA2-mTa2X6-wZ-n

Fossils

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Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Terceira_Island
Wikidata ID:Q215074
GeoNames ID:3372530

Localities in this Region

Portugal
Portugal

Other Regions, Features and Areas that Intersect

African PlateTectonic Plate
Atlantic OceanOcean
Eurasian PlateTectonic Plate

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

Hartung, G. (1860) Die Azoren in ihrer äußeren Erscheinung und nach ihrer geognostischen Natur. Leipzig, Verlag von Wilhelm Engelmann, 350 pages (in German).
Weston, F. S. (1964). List of recorded volcanic eruptions in the Azores with brief reports. Boletim do Museu e Laboratorio Mineralogico e Geologico da Faculdade de Ciencias, Lisboa, 10, 3-18.
Rosenbaum, M. S. (1974). Basaltic volcanism in south-east Terceira, Azores. Geological Magazine, 111(5), 409-420. doi.org/10.1017/S0016756800039960
Self, S. (1976). The recent volcanology of Terceira, Azores. Journal of the Geological Society, 132(6), 645-666. doi.org/10.1144/gsjgs.132.6.0645
Mungall, J.E., Martin, R.F. (1995) Petrogenesis of basalt–comendite and basalt–pantellerite suites, Terceira, Azores, and some implications for the origin of ocean-island rhyolites. Contributions to Mineralogy and Petrology, 119, 43–55.
Mungall, J. E., Martin, R. F. (1996) xtreme differentiation of peralkaline rhyolite, Terceira, Azores; a modern analogue of Strange Lake, Labrador?. The Canadian Mineralogist, 34 (4) 769-777
Calvert, A. T., Moore, R. B., McGeehin, J. P., & da Silva, A. M. R. (2006). Volcanic history and 40Ar/39Ar and 14C geochronology of Terceira Island, Azores, Portugal. Journal of Volcanology and Geothermal Research, 156(1-2), 103-115. doi.org/10.1016/j.jvolgeores.2006.03.016
Gertisser, R., Self, S., Gaspar, J. L., Kelley, S. P., Pimentel, A., Eikenberg, J., ... & Vespa, M. (2010). Ignimbrite stratigraphy and chronology on Terceira Island, Azores. The Geological Society of America, Special Paper, 464, 133-154.
Larrea, P., França, Z., Widom, E., & Lago, M. (2018). Petrology of the Azores Islands. In Volcanoes of the Azores (pp. 197-249). Springer, Berlin, Heidelberg.
Woolley, Alan R. (2019) Alkaline Rocks and Carbonatites of the World. Part 4: Antarctica, Asia and Europe (excluding the former USSR), Australasia and Oceanic Islands. The Geological Society of London. doi:10.1144/mpar4
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