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H 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
H3 chondrite greater than 5 % deviationsminor primary grains only  clear, isotropic, variable abundancechondrules very sharply definednone349 kgpredominantly monoclinicclastic and minor opaquenone0.2 to 1 % by weight3type 3 chondrite0.3 to 3 % by weight9
H4 chondritethe range over at which the alteration took placeless than 5 % mean deviationssecondary, grains than 2 micronsthermal metamorphismproviding insight into geological evolution of parent asteroiddevitrified, absentchondrules well defined 1251 kggreater than 20 % monoclinictransparent, recrystallized, small crystalsweakless than 0.2 % by weight4type 4 chondriteless than 1.5 % by weight37
H5 chondritethe range over at which the alteration took placehomogeneoussecondary, 2 to 50 micron grainsthermal metamorphismproviding insight into geological evolution of parent asteroiddevitrified, absentchondrules readily delineated 1267 kgless than 20 % monoclinictransparent, recrystallized, moderate size crystalsmoderateless than 0.2 % by weight5type 5 chondriteless than 1.5 % by weight76
H6 chondritethe range over at which the alteration took placehomogeneoussecondary, grains greater than 50 micronsthermal metamorphismproviding insight into geological evolution of parent asteroiddevitrified, absentchondrules poorly defined 11357 kgorthorhombictransparent, recrystallized, coarse crystalsstrongless than 0.2 % by weight6type 6 chondriteless than 1.5 % by weight44

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