type IIA chondrule concept from the Meteorites knowledge base

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meteorite characteristic > stone meteorite characteristic > chondritic meteorite characteristic > chondrule > type A chondrule > type IIA chondrule

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type IIA chondrule

subject fact

type IIA chondrule is a kind of type II chondrule 2000-12-14 14:18:03.0
is a kind of type A chondrule

type II chondrule has iron oxide content high
has Mg content of olivine or pyroxene less than 90 %
has oxidation state high or oxidized

type A chondrule has olivine content high
has pryroxene content low

chondrule has diameter usually less than 1 mm but can range from 0.1 to 10 millimeters 2000-12-14 14:18:01.0
has relative volume 80 % of volume of ordinary and enstatite chondrite and greater than 15 % of most other chondrite groups
has composition glass
has texture
has abundance most abundant part of chondrite meteorite

type IIA chondrule	is a kind of type II chondrule
type IIA chondrule	is a kind of type A chondrule
type II chondrule	has iron oxide content high
	*has Mg content of olivine* or pyroxene** less than 90 %
	has oxidation state high or oxidized
type A chondrule	*has olivine* content** high
type A chondrule	has pryroxene content low
chondrule	has diameter usually less than 1 mm but can range from 0.1 to 10 millimeters
	has relative volume 80 % of volume of ordinary and enstatite chondrite and greater than 15 % of most other chondrite groups
	has composition glass
	has texture
	has abundance most abundant part of chondrite meteorite