shocked chondrite | agglomeration of particles, many of which record individual, diverse histories | in volume % | in weight % | from unshocked to whole rock melted | oldest and most primitive rock in solar system | in volume % | from unshocked S1 to shock melted | usually plagioclase tectosilicate | in weight % | providing insight into geological evolution of parent asteroid | orthopyroxene for enstatite chondrite | the nature and degree of thermal metamorphism or aqueous alteration | visual characteristics of single crystals in polarizing microscope | before, during or after other types of metamorphism | definition goes here | in volume % | small sphere of about 1 mm diameter of formerly melted minerals | definition goes here | less than 950 degree Celsius during its entire history since solidification | visual characteristics of single crystals in polarizing microscope | visual characteristics of single crystals in polarizing microscope | asteroid smaller than 100 km in diameter | fine grained disequilibrium mixture of silicates, oxides, metal, sulfides and organic constituents | in volume % | which depends on degree of aqueous alteration and thermal metamorphism | in weight % | shocked meteorite | in weight % | the equilibration peak shock pressure in GPa (gigapascals) for ordinary chondrites only | millimeters |
S5 shock stage chondrite | agglomeration of particles, many of which record individual, diverse histories | in volume % | in weight % | strongly shocked | oldest and most primitive rock in solar system | in volume % | S5 | usually plagioclase tectosilicate | in weight % | providing insight into geological evolution of parent asteroid | orthopyroxene for enstatite chondrite | the nature and degree of thermal metamorphism or aqueous alteration | strong mosaicism, planar fractures, planar deformation features | before, during or after other types of metamorphism | definition goes here | in volume % | small sphere of about 1 mm diameter of formerly melted minerals | definition goes here | less than 950 degree Celsius during its entire history since solidification | maskelynite transformation | strong mosaicism, planar fractures | asteroid smaller than 100 km in diameter | fine grained disequilibrium mixture of silicates, oxides, metal, sulfides and organic constituents | in volume % | which depends on degree of aqueous alteration and thermal metamorphism | in weight % | S5 shock stage meteorite | in weight % | 45 to 55 GPa | millimeters |