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rock > metamorphic rock > altered chondrite
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altered chondrite comparison table
Subject has weather resistance has alteration temperature range has degree of shock metamorphism has shock stage has fragmentation probability has metamorphism mechanism has shock diagnostic mineral is independent of has olivine shock metamorphism be shock has relative abundance has degree of aqueous alteration has total mass of find has plagioclase shock metamorphism has orthopyroxene shock metamorphism has degree of thermal metamorphism is a kind of has number of find has ablative mass loss has shock pressure
shocked chondritewhich depends on its composition from unshocked to whole rock meltedfrom unshocked S1 to shock meltedduring meteor phase which depends on compositionshock metamorphismorthopyroxene for enstatite chondritethe nature and degree of thermal metamorphism or aqueous alterationvisual characteristics of single crystals in polarizing microscopebefore, during or after other types of metamorphism  485755 kgvisual characteristics of single crystals in polarizing microscopevisual characteristics of single crystals in polarizing microscope shocked meteorite1691directly proportional to initial velocitythe equilibration peak shock pressure in GPa (gigapascals) for ordinary chondrites only
thermally altered chondritelowthe range over at which the alteration took place  high because it is more friable than iron meteoritethermal metamorphism    85.7 % of meteorite falls 20461 kg  the chemical and structural effects of high temperatures on original chondritealtered chondrite1030high because it is more friable than iron meteorite 
water altered chondritelow   high because it is more friable than iron meteoriteaqueous altermation    85.7 % of meteorite fallsthe chemical and structural effects of water on original chondrite20461 kg   altered chondrite1030high because it is more friable than iron meteorite 

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