The Struture and Genesis of Epidote Grains

• 责任者：Zhang Liangju (College of Earth Science ; Guilin University of Technology ; Guilin 541004 ; China) ; Rao Can
• 刊名：Acta Mineralogica Sinica
• 出版年：2010
• 卷期：30(2)
• 关键词：绿帘石 ; epidote ; 四川 ; Sichuan Province
• 页码：p.174-178
• 图表：3 illus., 2 tables, 7 refs.
• 分类号：0700
• issnNo：ISSN1000-4734
• isbnNo：CN52-1045/P

The epidote with the associations of quartz and hematite, occurs as grains in miarolitic cavity in basic volcaniclastic rock, Leibo in Sichuan Province, China. The results indicate that the epidote has at least two generations: light green rosette needles aggregates and dark green granular aggregates. The Raman spectrum and inclusion thermometric analyses indicate that the hydrothermal fluids are enriched in H₂O and CH₄. Epidote occurs as the product of hydrothermal fluids under temperature 164~177℃ and salinity 7.31%~7.73%. As a whole, epidote grains are formed during the low temperature, high supersaturation and fast variation of the growth environment.