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sorry also... El 23/06/2011 11:45 AM, Vicente López Sánchez-Vizcaíno escribió: > sorry > Vicente > > El 22/06/2011 14:17, José Alberto Padrón-Navarta escribió: >> Dear Trisrota, >> To my knowledge you have a good chance to discriminate them just >> looking at the texture itself and the mineral assemblage. 'Real' >> spinifex texture olivine is needle-like or bladed, but most commonly >> skeletal or feathery. Spinifex-like or pseudospinifex olivine >> (metamorphic origen) is needle-like or bladed, but no skeletal nor >> feathery. Moreover in the pseudospinifex there is no glass in the >> matrix and used to have other hydrous primary minerals like talc, >> chlorite and tremolite. >> >> There is a vast literature for the 'real' spinifex texture. For >> metamorphic spinifex-like texture you may be referred to Oliver et >> al. 1972, Evans and Trommsdorff , 1974, Snoke and Calk, 1978, Bakke >> and Korneliussen, 1986, Trommsdorff et al. 1998, Padrón-Navarta et >> al. 2010. >> >> Good luck, >> Cheers, >> >> José Alberto Padrón-Navarta >> Departamento de Mineralogía y Petrología >> Universidad de Granada, >> Spain >> >> >> El 22/06/2011 1:17 PM, Trisrota Chaudhuri escribió: >>> >>> Dear all, >>> Please forgive my ignorance. But can please let me know how to >>> demarcate between spinifex textured olivine and aciclar metamorphic >>> olivine? Is there any textural or distinct mineral association? >>> Best Regards, >>> -- >>> Trisrota Chaudhuri, >>> JRF of Indian Statistical Institute and Jadavpur University, >>> Kolkata, India. >>> >>