L chondrite Comparison Table

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L chondrite comparison table

Subject has alteration temperature range has olivine and low Ca pyroxene homogeneity has part feldspar has metamorphism mechanism has degree of secondary process has chondrule glass type has part chondrule has degree of aqueous alteration has total mass of find has structural state of low Ca pyroxene has part matrix has degree of thermal metamorphism has part carbon has petrologic type is a kind of has part water has number of find

L3 chondrite greater than 5 % deviations minor primary grains only clear, isotropic, variable abundance chondrules very sharply defined none 131 kg predominantly monoclinic clastic and minor opaque none 0.2 to 1 % by weight 3 type 3 chondrite 0.3 to 3 % by weight 10

L4 chondrite the range over at which the alteration took place less than 5 % mean deviations secondary, grains than 2 microns thermal metamorphism providing insight into geological evolution of parent asteroid devitrified, absent chondrules well defined 1197 kg greater than 20 % monoclinic transparent, recrystallized, small crystals weak less than 0.2 % by weight 4 type 4 chondrite less than 1.5 % by weight 21

L5 chondrite the range over at which the alteration took place homogeneous secondary, 2 to 50 micron grains thermal metamorphism providing insight into geological evolution of parent asteroid devitrified, absent chondrules readily delineated 1256 kg less than 20 % monoclinic transparent, recrystallized, moderate size crystals moderate less than 0.2 % by weight 5 type 5 chondrite less than 1.5 % by weight 44

L6 chondrite the range over at which the alteration took place homogeneous secondary, grains greater than 50 microns thermal metamorphism providing insight into geological evolution of parent asteroid devitrified, absent chondrules poorly defined 4673 kg orthorhombic transparent, recrystallized, coarse crystals strong less than 0.2 % by weight 6 type 6 chondrite less than 1.5 % by weight 155

Subject	has alteration temperature range	has olivine and low Ca pyroxene homogeneity	has part feldspar	has metamorphism mechanism	has degree of secondary process	has chondrule glass type	has part chondrule	has degree of aqueous alteration	has total mass of find	has structural state of low Ca pyroxene	has part matrix	has degree of thermal metamorphism	has part carbon	has petrologic type	is a kind of	has part water	has number of find
L3 chondrite		greater than 5 % deviations	minor primary grains only			clear, isotropic, variable abundance	chondrules very sharply defined	none	131 kg	predominantly monoclinic	clastic and minor opaque	none	0.2 to 1 % by weight	3	type 3 chondrite	0.3 to 3 % by weight	10
L4 chondrite	the range over at which the alteration took place	less than 5 % mean deviations	secondary, grains than 2 microns	thermal metamorphism	providing insight into geological evolution of parent asteroid	devitrified, absent	chondrules well defined		1197 kg	greater than 20 % monoclinic	transparent, recrystallized, small crystals	weak	less than 0.2 % by weight	4	type 4 chondrite	less than 1.5 % by weight	21
L5 chondrite	the range over at which the alteration took place	homogeneous	secondary, 2 to 50 micron grains	thermal metamorphism	providing insight into geological evolution of parent asteroid	devitrified, absent	chondrules readily delineated		1256 kg	less than 20 % monoclinic	transparent, recrystallized, moderate size crystals	moderate	less than 0.2 % by weight	5	type 5 chondrite	less than 1.5 % by weight	44
L6 chondrite	the range over at which the alteration took place	homogeneous	secondary, grains greater than 50 microns	thermal metamorphism	providing insight into geological evolution of parent asteroid	devitrified, absent	chondrules poorly defined		4673 kg	orthorhombic	transparent, recrystallized, coarse crystals	strong	less than 0.2 % by weight	6	type 6 chondrite	less than 1.5 % by weight	155

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