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rock > gravitationally separated rock > fractional crystallized rock > plutonic cumulate > clinopyroxenite > nakhilite > Governador Valadares

Governador Valadares
subject			fact

Governador Valadares	is an instance of nakhilite
	has name Governador Valadares
	has fall location Minas Gerais, Brazil
	has find date 1958
	has mass 0.16
	has curatorial location Rome, London
	has SiO2 content 49.5 % by mass
	has TiO2 content 0.35 % by mass
	has Al2O3 content 1.74 % by mass
	has Cr2O3 content 0.25 % by mass
	has FeO content 19.6 % by mass
	has MnO content 0.67 % by mass
	has MgO content 10.9 % by mass
	has CaO content 13.9 % by mass
	has Na2O content 0.65 % by mass
	has K2O content 0.14 % by mass
nakhilite	has prototype Nakhla meteorite
	has letter designation ACANOM
	has characteristic mineral diopside-olivine
	has composition cumulus-augite-bearing proxenite
SNC meteorite	is an acronym for Shergottite, Nakhilite, Chassignite
martian meteorite	has origin Mars
plutonic rock	has solidification mechanism cooling in deep underground chambers
	has solidification timescale very slow
fractional crystallized rock	has genesis fractional crystallization
gravitationally separated rock	has property formed by separation of molten rock in a gravity field
achondrite	has relative abundance 7.1 % of meteorite falls
	has distinguishing feature no chondrules
	has number of finds 70
	has total mass of finds 1606 kg
rock	has part mineral
	has texture
meteorite	has fall date recorded by eyewitness or inferred from dating methods
	has fall coordinates in degrees, minutes and seconds of lattitude and longitude
	has fall map which appears as an elongated footprint which depends on impact angle, airbursts, and impact velocity
	can have crater image
	has original mass which can over an order of magnitude greater than total mass of fragment(s) collected at the impact site
	has impact velocity when it hits the ground which is smaller than its velocity before it enters the atmosphere
	has impact angle
	has weather resistance which depends on its composition
	has monetary value large if the fall was witnessed
	often produce power outages and failures in electrical equipment due to EMP (electromagnetic pulse)
	can be associated with crater
	vaporizes completely if size is between 3 micrometers and 3 millimeters
	can survive fall if size is larger than 3 mm and velocity is less than 24 km per second
	can survive fall if it fragments because smaller pieces with less mass are more easily slowed by the atmosphere
	has ablative mass loss depending on composition, more friable stony meteoroids loses more mass than iron meteoroid
	has ablative mass loss directly proportional to initial velocity
	can shatter during impact phase
	can fragment during meteor phase
	has fragmentation probability during meteor phase which depends on composition
stony meteorite	has weather resistance low
	has fragmentation probability high because it is more friable than iron meteorite
	has ablative mass loss high because it is more friable than iron meteorite

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