Locality type:

Island

Classification

Species:

Aegirine-augite

Formula:

(Na_aCa_bFe_c²⁺Mg_d)(Fe_e³⁺Al_fFe_g²⁺Mg_h)Si₂O₆

Confirmation

Validity:

Believed Valid

Data

Mineral Data:

Click here to view Aegirine-augite data

Locality Data:

Click here to view São Miguel, Azores, Portugal

Data Identifiers

Mindat Occurrence Record ID:

1418084

Long-form Identifier:

1:3:1418084:4

GUID (UUID V4):

c53ae0bf-c3e4-47aa-ba1d-a7b8b5e28cfd

Localities for Aegirine-augite in this Region

Água de Pau Volcano, São Miguel, Azores, Portugal

References

Abdel-Monem, A. A., Fernandez, L. A., & Boone, G. M. (1975). K-Ar ages from the eastern Azores group (Santa Maria, São Miguel and the Formigas islands). Lithos, 8(4), 247-254. doi.org/10.1016/0024-4937(75)90008-0

Feraud, G., Kaneoka, I., & Allègre, C. J. (1980). K/Ar ages and stress pattern in the Azores: geodynamic implications. Earth and planetary science letters, 46(2), 275-286. doi.org/10.1016/0012-821X(80)90013-8

Mattiolil, M., Upton, B. G. J., & Renzulli, A. (1997). Sub-volcanic crystallization at Sete Cidades volcano, São Miguel, Azores, inferred from mafic and ultramafic plutonic nodules. Mineralogy and Petrology, 60(1-2), 1-26. doi.org/10.1007/BF01163132

Widom, E., Carlson, R. W., Gill, J. B., & Schmincke, H. U. (1997). Th–Sr–Nd–Pb isotope and trace element evidence for the origin of the Sao Miguel, Azores, enriched mantle source. Chemical Geology, 140(1-2), 49-68. doi.org/10.1016/S0009-2541(97)00041-7

Renzulli, A., & Santi, P. (2000). Two-stage fractionation history of the alkali basalt-trachyte series of Sete Cidades volcano (São Miguel Island, Azores). European Journal of Mineralogy, 12(2), 469-494.

Ridolfi, F., Renzulli, A., Santi, P., & Upton, B. G. J. (2003). Evolutionary stages of crystallization of weakly peralkaline syenites: evidence from ejecta in the plinian deposits of Agua de Pau volcano (São Miguel, Azores Islands). Mineralogical Magazine, 67(4), 749-767. doi.org/10.1180/0026461036740131

Snyder, D. C., Widom, E., Pietruszka, A. J., & Carlson, R. W. (2004). The role of open-system processes in the development of silicic magma chambers: a chemical and isotopic investigation of the Fogo A trachyte deposit, São Miguel, Azores. Journal of Petrology, 45(4), 723-738. doi.org/10.1093/petrology/egg104

Beier, C., Haase, K. M., & Hansteen, T. H. (2006). Magma evolution of the Sete Cidades volcano, São Miguel, Azores. Journal of Petrology, 47(7), 1375-1411. doi.org/10.1093/petrology/egl014

Elliott, T., Blichert-Toft, J., Heumann, A., Koetsier, G., & Forjaz, V. (2007). The origin of enriched mantle beneath São Miguel, Azores. Geochimica et Cosmochimica Acta, 71(1), 219-240. doi.org/10.1016/j.gca.2006.07.043

Gaspar, J. L., Guest, J. E., Duncan, A. M., Barriga, F. J. A. S., & Chester, D. K. (Eds.). (2015, October). Volcanic Geology of São Miguel Island (Azores Archipelago). Geological Society of London, 44. doi.org/10.1144/M44.1

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

Reference Search (possible matching items)

	Jeffery, A. J., Gertisser, R., O’Driscoll, B., Pacheco, J. M., Whitley, S., Pimentel, A., Self, S. (2016) Temporal evolution of a post-caldera, mildly peralkaline magmatic system: Furnas volcano, São Miguel, Azores. Contributions to Mineralogy and Petrology, 171 (5) doi:10.1007/s00410-016-1235-y	Journal (article/letter/editorial)
	peralkaline magmatic system: Furnas volcano, São Miguel, Azores A. J. Jeffery1 · R. Gertisser1 · B. O’Driscoll2...of three active central volcanoes on São Miguel Island, Azores, and is considered to be one of the most...Geológicos, University of the Azores, 9501‑801 Ponta Delgada, Azores, Portugal 4 Centro de Informação e...Sismovulcânica dos Açores, 9501‑801 Ponta Delgada, Azores, Portugal 5 Department of Earth and Planetary Science...basalt-trachyte suite of Furnas volcano, São Miguel, Azores (Fig. 1). Furnas volcano is an example of
	Ridolfi, F., Renzulli, A., Santi, P., Upton, B. G. J. (2003) Evolutionary stages of crystallization of weakly peralkaline syenites: evidence from ejecta in the plinian deposits of Agua de Pau volcano (São Miguel, Azores Islands) Mineralogical Magazine, 67 (4) 749-767 doi:10.1180/0026461036740131	Journal (article/letter/editorial)
	plinian deposits of Agua de Pau volcano (Sao Miguel, Azores Islands) F. RIDOLFI1, A. RENZULLI1,, P. SANTI1...fall deposits of Agua de Pau volcano (São Miguel, Azores* Islands) are divisible into (1) silica-undersaturated...minerals, Agua de Pau, São Miguel, Azores. Introduction T HE Azores archipelago straddles the MidAtlantic...MidAtlantic Ridge and emerges from the Azores Platform, (37 – 40ºN and 25 – 31ºW) near the North American-African-Eurasian...triple plate junction (Burke and Wilson, 1976). São Miguel is one of the eastern islands and is located along
	Macdonald, R., Bagiński, B., Leat, P.T., White, J.C., Dzierżanowski, P. (2011) Mineral stability in peralkaline silicic rocks: Information from trachytes of the Menengai volcano, Kenya. Lithos, 125 (1) 553-568 doi:10.1016/j.lithos.2011.03.011	Journal (article/letter/editorial)
	settings, e.g. ocean islands such as Terceira, Azores (Self and Gunn, 1976) and Socorro Island, Mexico...Fig. 7), although the phenocrysts in RJK10b are augite (Table 3). The degree of zonation is variable but...reduce the peralkalinity of residual melts. Aegirine-augite occurs as phenocryst rims in K1A34/1 (Ti 0...are hedenbergites or sodian hedenbergites. Aegirine-augite phenocrysts (as opposed to the rims of zoned...Menengai, all with PI N 1.5. The occurrence of aegirine-augite is not related in any simple way to a compositional
	RIDOLFI, F, RENZULLI, A, MACDONALD, R, UPTON, B (2006) Peralkaline syenite autoliths from Kilombe volcano, Kenya Rift Valley: Evidence for subvolcanic interaction with carbonatitic fluids. Lithos, 91 (1) 373-392 doi:10.1016/j.lithos.2006.03.026	Journal (article/letter/editorial)
	replacement of (i) Mg–hedenbergite by aegirine–augite, Ca–aegirine and/or aegirine, (ii) fayalite by amphiboles...katophorite, arfvedsonite, hydroannite, apatite, aegirine and quartz or analcime. Feldspar crystal sizes...albite, 20–30% aegirine and 0–30% quartz. The melasyenites are characterised by aegirine needles poikilitically...usually zoned or show overgrowths of aegirine–augite or aegirine. Fayalite crystals in the interstices...hedenbergite; Aeg-aug = aegirine–augite; Ca-aeg = calcium aegirine; Aeg = aegirine; Ktp = katophorite; Fe-frn
	Cucciniello, Ciro, Melluso, Leone, le Roex, Anton P., Jourdan, Fred, Morra, Vincenzo, de’ Gennaro, Roberto, Grifa, Celestino (2017) From olivine nephelinite, basanite and basalt to peralkaline trachyphonolite and comendite in the Ankaratra volcanic complex, Madagascar: 40 Ar/ 39 Ar ages, phase compositions and bulk-rock geochemical and isotopic evolution. Lithos, 274. 363-382 doi:10.1016/j.lithos.2016.12.026	Journal (article/letter/editorial)
	groundmass mineral AC assemblages (aenigmatite, aegirine, arfvedsonite and the rare Zr-, Na- Ti- and REE-rich...high as 4.7 and 8.9 wt.%, 37). TE respectively. Augite is the Ca-rich clinopyroxene of tholeiitic basalt...mugearites and benmoreite is diopside/salite and augite with rare Fesalite (Ca50-39Fe14-23Mg40-24; Mg#...Fe-salite, nearly pure hedenbergite, aegirine-augite and aegirine (Na2O = 1.1-13.1 wt.%; Mg# = 0-47; supplementary...clinopyroxene of the comendite is a solid solution of aegirine and NaFe0.5Ti0.5Si2O6 (TiO2 up to 4.5 wt.%), that
	*(2021) Crustal Magmatic System Evolution. Wiley. doi:10.1002/9781119564485*	Book
	Caldeira Volcano of the ocean island of Faial, Azores; © Christoph Beier, University of Helsinki, Finland...and hydrous melts coexisting with plagioclase, augite, and olivine or low‐Ca pyroxene from 1 atm to 8...models of anhydrous, basaltic olivine‐plagioclase‐augite saturated melts from 0.001 to 10 kbar. Contributions...models of anhydrous, basaltic olivine‐plagioclase‐augite saturated melts from 0.001 to 10 kbar. Contributions... Senghor Seamount São Vicente 17°N Sal São Luzia 0m 16°N 30 Boa Vista São Nicolau 16°N Santiago
	*Okrusch, Martin, Frimmel, Hartwig E. (2020) Mineralogy. Springer Berlin Heidelberg. doi:10.1007/978-3-662-57316-7*	Book
	Economic Minerals . Fig. 2.6 Pyroxene (basaltic augite), big phenocryst in basalt; besides, a second much...2 Volcanic rock: limburgite with phenocrysts of augite in a hyaline matrix. The rock contains a great...in South America are Guaniamo in Venezuela, São Luiz and São Francisco in Brazil (Levinson et al. 1992;...These strata rest on the Archaean basement of the São Francisco Craton in Brazil and the Congo Craton of...solutions between the end-members jadeite (Jd), aegirine (Aeg) and the Ca–Mg–Fe pyroxenes (Quad = Wo +
	Quesada, Cecilio, Oliveira, José Tomás - Eds. (2019) The Geology of Iberia: A Geodynamic Approach Vol. 2 - The Variscan Cycle - Regional Geology Reviews. Springer International Publishing. doi:10.1007/978-3-030-10519-8	Book (volume)
	Madrid, Spain José Tomás Oliveira LNEG Amadora, Portugal ISSN 2364-6438 ISSN 2364-6446 (electronic) Regional...by Late Triassic red beds, Telheiro beach, SW Portugal. Photographed with a drone by JC Kullberg This...Energia e Geologia, former Geological Survey of Portugal, where he acted also as head of the departments...concentrated in regional geological mapping in Portugal and Mozambique, with particular interest in stratigraphy...and basin analysis. Professor at universities of Portugal and Angola, author and editor of several geological
	*Krivovichev, Sergey V. - Ed.* (2019) Arctic Mineral Resources. MDPI. doi:10.3390/books978-3-03897-825-1**	Book
	deposits contain up to 10–16 ppm in BIF deposits in the São Francisco Craton (Brazil), up to 8–14 ppm in the...− − − − + + + + + + − + − + + − + + + − + + Aegirine “Braginoite” Chamosite Clinochlore Diopside Fuchsite...not established [52]. Minerals of the natalyite-aegirine series and vanadates of rare-earth elements are...Accessories include minerals of the aegirine-jervisite and aegirine-natalyite series, allanite, Ca-Mn silicates...Voloshin, A.V.; Telezhkin, A.A. The natalyite-aegirine series in alkaline metasomatites of the Imandra-Varzuga
	*O'Donoghue, Michael (2006) Gems : their sources, descriptions and identification* (6th ed.) Butterworth-Heinemann.**	Book (edition)
	the interior of Brazil and the royal house of Portugal received many specimens from the early seventeenth...garnets are reported to contain quartz or possibly augite crystals arranged in a circular pattern. Some Arizona...anorthoclase, with lesser amounts of riebeckite and aegirine. It is a dark green rock that contains golden...the Ojuela Mine, Mapimi, Durango, Mexico. Aegirine Aegirine is NaFe3+ Si2O6 and forms translucent to opaque...836, biaxial negative with birefringence 0.045. Aegirine occurs in alkalic igneous rocks and in pegmatites

Aegirine-augite from São Miguel, Azores, Portugal

Aegirine-augite from
São Miguel, Azores, Portugal