CI chondrite | agglomeration of particles, many of which record individual, diverse histories | low | 0 % by volume | in weight % | during meteor phase | oldest and most primitive rock in solar system | less than 1 % by volume | it fragments because smaller pieces with less mass are more easily slowed by the atmosphere | elemental carbon | size is between 3 micrometers and 3 millimeters | usually plagioclase tectosilicate | high because it is more friable than iron meteorite | in weight % | crater | strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity | recorded by eyewitness or inferred from dating methods | | aqueous altermation | providing insight into geological evolution of parent asteroid | based on the locale, region, or nearby town in which the fall occurred | | | definition goes here | less than 1 % by volume | 8 % of meteorite falls | during impact phase | | no chondrules | rare relative to other chondrite types | Ivuna meteorite | strong | 2577 kg | definition goes here | when it hits the ground which is smaller than its velocity before it enters the atmosphere | less than 950 degree Celsius during its entire history since solidification | all fine-grained, opaque | high | asteroid smaller than 100 km in diameter | in degrees, minutes and seconds of lattitude and longitude | greater than 99 % by volume | which depends on degree of aqueous alteration and thermal metamorphism | 3 to 5 % by weight | 1 | often minerals not found on Earth | large if the fall was witnessed | which can over an order of magnitude greater than total mass of fragment(s) collected at the impact site | type 1 chondrite | | 18 to 22 % by weight | meteoroid from interplanetary space or fragment dislodged from another planet, moon or planetesimal | friable | 36 | high because it is more friable than iron meteorite | power outages and failures in electrical equipment due to EMP (electromagnetic pulse) | no chondrules | | which appears as an elongated footprint which depends on impact angle, airbursts, and impact velocity |