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meteorite characteristic > stone meteorite characteristic > chondritic meteorite characteristic > chondrule > ferromagnesian chondrule > porphyritic pyroxene chondrule

porphyritic pyroxene chondrule (PP chondrule)
subject			fact

porphyritic pyroxene chondrule	is a kind of porphyritic chondrule
	is a kind of ferromagnesian chondrule
	has definition chondrule with porphyritic pyroxene crytals
	has texture porphyritic pyroxene crytals
	has acronym PP chondrule
porphyritic chondrule	has origin extensively melted droplet in which abundant heterogenous nucleation sites were preserved during the chondrule melting event
	has nucleation mechanism relict grains consisting of remnant crystals less than 10 microns in size
ferromagnesian chondrule	has composition ferromagnesian minerals
	has abundance most chondrules are ferromagnesian
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