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rock comparison table
Subject has sediment mechanism has weather resistance has crystalinity fragment survive fall if vaporize completely if has fragmentation probability be associated with has fall location has fall date has impact angle has metamorphism mechanism has solidification mechanism has name has part has relative abundance shatter has texture has total mass of find has impact velocity has fall coordinate has composition has original mass has monetary value has property has grain size has number of find has origin has ablative mass loss produce has solidification timescale has definition have crater image has fall map
amygdaloidal rock                               rock containing mineral-filled elliptically shaped vesicles  
aphanitic rock                         too small to see with unaided eye or low power lens     a rock with grains too small to see or identify with either the unaided eye or a low power lens  
glass                                  
gravitationally separated rock                        formed by separation of molten rock in a gravity field         
holocrystaline rock  100 %              entirely crystaline                
holohyaline rock  0 %              glass                
hypocrystaline rock  mixture of crystals and glass              crystals and glass                
igneous rock                     silicates (with very few exceptions)         rock formed from the solidification of magma  
metamorphic rock                               a rock which has undergone chemical and or structural transformation from its original solid form  
meteorite which depends on its composition during meteor phaseit fragments because smaller pieces with less mass are more easily slowed by the atmospheresize is between 3 micrometers and 3 millimetersduring meteor phase which depends on compositioncraterstrewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocityrecorded by eyewitness or inferred from dating methods   based on the locale, region, or nearby town in which the fall occurredfragments during impact phase 485755 kgwhen it hits the ground which is smaller than its velocity before it enters the atmospherein degrees, minutes and seconds of lattitude and longitudeoften minerals not found on Earthwhich can over an order of magnitude greater than total mass of fragment(s) collected at the impact sitelarge if the fall was witnessed  1691meteoroid from interplanetary space or fragment dislodged from another planet, moon or planetesimaldirectly proportional to initial velocitypower outages and failures in electrical equipment due to EMP (electromagnetic pulse) what remains after a meteoroid strikes the surface of a planet, satellite or asteroid which appears as an elongated footprint which depends on impact angle, airbursts, and impact velocity
phaneretic rock                         discernable without a microscope     a rock whose grains can be discerned without the aid of a microscope  
sedimentary rock                                  

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