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rock > metamorphic rock > altered chondrite > water altered chondrite

water altered chondrite comparison table

Subject	has olivine and low Ca pyroxene homogeneity	has part feldspar	has chondrule glass type	has part chondrule	has degree of aqueous alteration	has structural state of low Ca pyroxene	has part matrix	has part carbon	has petrologic type	has part maximum bulk Ni in metal	has part water	has part sulfide Ni content
type 1 chondrite		usually plagioclase tectosilicate		no chondrules	strong	definition goes here	all fine-grained, opaque	3 to 5 % by weight	1		18 to 22 % by weight
type 2 chondrite	greater than 5 % deviations	minor primary grains only	altered, mostly absent	chondrules very sharply defined	moderate	predominantly monoclinic	mostly fine, opaque	0.8 to 2.6 % by weight	2	less than 20 % by weight; taenite minor or absent	2 to 16 % by weight	greater than 0.5 % by weight

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