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 % deviations | minor primary grains only | | | clear, isotropic, variable abundance | chondrules very sharply defined | none | 349 kg | predominantly monoclinic | clastic and minor opaque | none | 0.2 to 1 % by weight | 3 | type 3 chondrite | 0.3 to 3 % by weight | 9 |
H4 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 | | 1251 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 | 37 |
H5 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 | | 1267 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 | 76 |
H6 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 | | 11357 kg | orthorhombic | transparent, recrystallized, coarse crystals | strong | less than 0.2 % by weight | 6 | type 6 chondrite | less than 1.5 % by weight | 44 |