Quartz from Madeira, Portugal


Portugal
ⓘ Madeira	Klügel, A., Schwarz, S., van den Bogaard, P., Hoernle, K. A., Wohlgemuth-Ueberwasser, C. C., & Köster, J. J. (2009). Structure and evolution of the volcanic rift zone at Ponta de São Lourenço, eastern Madeira. Bulletin of Volcanology, 71(6), 671-685. doi.org/10.1007/s00445-008-0253-7 Geldmacher, J., Hoernle, K., Klügel, A., van den Bogaard, P., & Duggen, S. (2006). A geochemical transect across a heterogeneous mantle upwelling: implications for the evolution of the Madeira hotspot in space and time. Lithos, 90(1-2), 131-144. doi.org/10.1016/j.lithos.2006.02.004 Schwarz, S., Klügel, A., van den Bogaard, P., & Geldmacher, J. (2005). Internal structure and evolution of a volcanic rift system in the eastern North Atlantic: the Desertas rift zone, Madeira archipelago. Journal of volcanology and geothermal research, 141(1-2), 123-155. doi.org/10.1016/j.jvolgeores.2004.10.002 Schwarz, S., Klügel, A., & Wohlgemuth-Ueberwasser, C. (2004). Melt extraction pathways and stagnation depths beneath the Madeira and Desertas rift zones (NE Atlantic) inferred from barometric studies. Contributions to Mineralogy and Petrology, 147(2), 228-240. doi.org/10.1007/s00410-004-0556-4 Geldmacher, J., & Hoernle, K. (2000). The 72 Ma geochemical evolution of the Madeira hotspot (eastern North Atlantic): recycling of Paleozoic (≤ 500 Ma) oceanic lithosphere. Earth and Planetary Science Letters, 183(1-2), 73-92. doi.org/10.1016/S0012-821X(00)00266-1 Mata, J., Kerrich, R., MacRae, N. D., & Wu, T. W. (1998). Elemental and isotopic (Sr, Nd, and Pb) characteristics of Madeira Island basalts: evidence for a composite HIMU-EM I plume fertilizing lithosphere. Canadian Journal of Earth Sciences, 35(9), 980-997. doi.org/10.1139/e98-046 Munha, J., Palacios, T., MacRae, N. D., & Mata, J. (1990). Petrology of ultramafic xenoliths from Madeira Island. Geological Magazine, 127(6), 543-566. doi.org/10.1017/S0016756800015442 Feraud, G., Gastaud, J., Schmincke, H. U., Pritchard, G., Lietz, J., & Bleil, U. (1981). New K-Ar ages, chemical analyses and magnetic data of rocks from the islands of Santa Maria (Azores), Porto Santo and Madeira (Madeira Archipelago) and Gran Canaria (Canary Islands). Bulletin volcanologique, 44(3), 359-375. doi.org/10.1007/BF02600570 Aires-Barros, L., Matias, M. J., & Miranda, A. M. (1974). Preliminary note on the petrology of Madeira Island. Boletim do Museu e Laboratorio Mineralogico e Geologico da Faculdade de Ciencias, Lisboa, 14, 5-27. Hughes, D. J., & Brown, G. C. (1972). Basalts from Madeira: a petrochemical contribution to the genesis of oceanic alkali rock series. Contributions to Mineralogy and Petrology, 37(2), 91-109. doi.org/10.1007/BF00371069
Madeira Island Ribeira Brava Serra de Água Boca da Encumeada pass ⓘ Roadside quarry	CEDOM
ⓘ Porto Santo Island	MUHNAC, Lisbon (António Bello mineral collection) former Harvard
ⓘ Porto Santo	Rui Nunes' info 2019 Rui Nunes' info 2019

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