Meteorites   View all facts   Glossary   Help

rock > igneous rock > differentiated meteorite > differentiated achondrite > asteroidal achondrite > ureilite > bi-modal ureilite > HaH 064

HaH 064 comparison table

Subject	has shock texture	has weather resistance	has reference	has minerology	has degree of shock metamorphism	has shock stage	is an instance of	has distinguishing feature	has orthopyroxene composition	has fragmentation probability	has fall location	has olivine grain characteristic	has metamorphism mechanism	has pyroxene shock metamorphism	has likely origin	has solidification mechanism	has shock diagnostic mineral	has olivine composition	has olivine shock metamorphism	has weather	has letter designation	has acronym	has relative abundance	has texture	has value	has total mass of find	has matrix composition	has characteristic mineral	has composition	is a kind of	has find date	has augite composition	has number of find	has origin	has ablative mass loss	has shock pressure	has solidification timescale	has definition	has pyroxene content	has petrology
bi-modal ureilite		low		olivine, pyroxene (some combination of pigeonite, orthopyroxene, augite)				no chondrules		high because it is more friable than iron meteorite	strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity	reduced rims contacting carbonaceous matrix material 0.1 mm FeO-free olivine and/or enstatite rims riddled with tiny inclusions of low-Ni metal			partial melting residue	cooling in deep underground chambers					AURE		7.1 % of meteorite falls	bi-modal with extremely large 15mm crystals of low-Ca pyroxene poikilitically enclosing domains with ureilite texture		9 kg (out of date)	carbon, metal, sulfides small silicate grains along grain boundaries less than 10% by volume	olivine-pigeonite about 90% by volume	silicates (with very few exceptions)	ureilite			6 (out of date)	asteroid	high because it is more friable than iron meteorite		very slow			coarse-grained granular
Hammadah al Hamra meteorite		which depends on its composition								during meteor phase which depends on composition	Hammadah al Hamra									can be severe due to long exposure time to environmental corrosion agents		HaH			lower because the fall was not witnessed	485755 kg			often minerals not found on Earth	Sahara meteorite	when the meteorite was found		1691	meteoroid from interplanetary space or fragment dislodged from another planet, moon or planetesimal	directly proportional to initial velocity
medium shock ureilite	greater extent of fracturing, undulatory extinction, and kink banding	which depends on its composition		olivine, pyroxene (some combination of pigeonite, orthopyroxene, augite)	medium	S4-S6		no chondrules		during meteor phase which depends on composition	strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity	reduced rims contacting carbonaceous matrix material 0.1 mm FeO-free olivine and/or enstatite rims riddled with tiny inclusions of low-Ni metal	shock metamorphism	may be cloudy due to glassy inclusions	partial melting residue	cooling in deep underground chambers	diamonds and/or lonsdaleite		sub-grain boundaries may be prominent		AURE					9 kg (out of date)	carbon, metal, sulfides small silicate grains along grain boundaries less than 10% by volume	olivine-pigeonite about 90% by volume	often minerals not found on Earth	S6 shock stage meteorite			6 (out of date)	asteroid	directly proportional to initial velocity	from 20 GPa to 100 GPa	very slow			coarse-grained granular
meteorite find		which depends on its composition								during meteor phase which depends on composition	strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity									can be severe due to long exposure time to environmental corrosion agents					lower because the fall was not witnessed	485755 kg			often minerals not found on Earth	meteorite	when the meteorite was found		1691	meteoroid from interplanetary space or fragment dislodged from another planet, moon or planetesimal	directly proportional to initial velocity			a meteorite whose fall was not witnessed
HaH 064	greater extent of fracturing, undulatory extinction, and kink banding	which depends on its composition	Weber and Bischoff (1996), Weber and Bischoff (1998)	olivine, pyroxene (some combination of pigeonite, orthopyroxene, augite)	medium	S4-S6	meteorite find	no chondrules	Wo% 4.6 En% 77	during meteor phase which depends on composition	Hammadah al Hamra	reduced rims contacting carbonaceous matrix material 0.1 mm FeO-free olivine and/or enstatite rims riddled with tiny inclusions of low-Ni metal	shock metamorphism	may be cloudy due to glassy inclusions	partial melting residue	cooling in deep underground chambers	diamonds and/or lonsdaleite	Fo% 78	sub-grain boundaries may be prominent	can be severe due to long exposure time to environmental corrosion agents	AURE	HaH		bi-modal with extremely large 15mm crystals of low-Ca pyroxene poikilitically enclosing domains with ureilite texture	lower because the fall was not witnessed	485755 kg	carbon, metal, sulfides small silicate grains along grain boundaries less than 10% by volume	olivine-pigeonite about 90% by volume	often minerals not found on Earth		when the meteorite was found	Wo% 32 En% 55	1691	meteoroid from interplanetary space or fragment dislodged from another planet, moon or planetesimal	directly proportional to initial velocity	from 20 GPa to 100 GPa	very slow		0.65 in modal pyroxene/(pryroxene+olivine)	coarse-grained granular

Next bi-modal ureilite: LEW 88774    Up: bi-modal ureilite, Hammadah al Hamra meteorite, medium shock ureilite, meteorite find    Previous bi-modal ureilite: EET 87511