نتایج جستجو برای: plagioclase

تعداد نتایج: 1579  

Journal: :journal of sciences, islamic republic of iran 2010
s khalili mobarhan

mount bidkhan stratovolcano is located in the central iranian volcanic belt. it is composed of several types of pyroclastic deposits, lava flows and intrusive bodies. textural and chemical characteristics of plagioclase phenocrysts from the eruptive products volcanic edifice, record complex magma mixing events over the lifetime of the volcano. evidences such as xenocrystic high al+ti clinopyrox...

Journal: :The Annals of occupational hygiene 2005
J Ovrevik T Myran M Refsnes M Låg R Becher R B Hetland P E Schwarze

Presently, little is known about the potential health effects of mineral particles other than asbestos and quartz. In this study, a human epithelial lung cell line (A549), primary human small airway epithelial cells (SAECs) and primary rat type 2 (T2) cells were exposed to stone quarry particles of two size fractions (<10 and <2.5 microm) from nine different rock samples. The ability to induce ...

Bakhtiari, Behnaz, Khodami, mahnaz,

Plagioclase is the most abundant mineral in basaltic andesites in the north Gavkhouni. Olivine and pyroxene are the other rock forming mineral there. In their 3-dimensional shapes, they are unequal and varies between bladed to prolate. Plagioclase sometimes exhibit dusty texture, oscillatory zoning and sinusoid growth. Based on crystal size distribution data, the rate of crystal nucleation of p...

Journal: :Rapport Grønlands Geologiske Undersøgelse 1987

Journal: :The Journal of the Geological Society of Japan 1950

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