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rock > igneous rock > differentiated meteorite > metal-rich meteorite > stony iron meteorite > pallasite > main group pallasite > Brenham
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Brenham comparison table
Subject is an instance of has chromite content has distinguishing feature has olivine grain shape has olivine content has fall location has metal content has formation cooling rate has name has olivine crystal distribution parent body radiu has olivine composition has weather has weathering stage has letter designation has relative abundance has value has total mass of find has phosphate content has fall coordinate has olivine composition uniformity has composition has troilite content has schreibersite content is a kind of has olivine grain size has find date has nickel content has mass has image has number of find has origin has minor mineral has definition
main group pallasite 1 % or less by volumemixture of iron-nickel alloy and non-metallic mineralsfrom angular fragments to rounded35 to 85 % by volumestrewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocityhigher than that of average solar system material2.5 to 4 degrees C per million yearsbased on the locale, region, or nearby town in which the fall occurredfrom homogeneous to heterogeneous78 to 97 kilometersFo 88+-1  PAL1.5 % of meteorite falls 7207 kg1 % or less by volumein degrees, minutes and seconds of lattitude and longitudeheterogeneous elements are zoned between grain rim and coremetallic iron plus olivine; core/mantle boundary samples0.1 to 7.3 % by volume0.3 to 2.8 % by volumepallasitetypically one centimeter always greater than 4 %  33planet or asteroid much larger than 100 km in diameterschreibersite 
meteorite find     strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity  based on the locale, region, or nearby town in which the fall occurred   can be severe due to long exposure time to environmental corrosion agents   lower because the fall was not witnessed485755 kg in degrees, minutes and seconds of lattitude and longitude often minerals not found on Earth  meteorite when the meteorite was found   1691meteoroid from interplanetary space or fragment dislodged from another planet, moon or planetesimal a meteorite whose fall was not witnessed
Brenhammain group pallasite1 % or less by volumemixture of iron-nickel alloy and non-metallic mineralsfrom angular fragments to rounded35 to 85 % by volumeKiowa County, Kansashigher than that of average solar system material2.5 to 4 degrees C per million yearsBrenhamheterogeneous some regions have no olivine crystals78 to 97 kilometersFo 88+-1can be severe due to long exposure time to environmental corrosion agentsextremePAL lower because the fall was not witnessed7207 kg1 % or less by volume37° 36' N., 99° 12' W.heterogeneous elements are zoned between grain rim and coremetallic iron plus olivine; core/mantle boundary samples0.1 to 7.3 % by volume0.3 to 2.8 % by volume typically one centimeter1882always greater than 4 %1.5 tons
33meteoroid from interplanetary space or fragment dislodged from another planet, moon or planetesimalschreibersite 

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