bi-modal ureilite Comparison Table

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

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bi-modal ureilite comparison table

Subject is paired with has shock texture has reference has degree of shock metamorphism has shock stage has orthopyroxene composition has fall location has pyroxene shock metamorphism has metamorphism mechanism has shock diagnostic mineral has olivine composition has olivine shock metamorphism has acronym has augite composition has minor mineral has shock pressure has pigeonite composition has pyroxene content

ALH 82106 ALH 84136 Goodrich et al. (1987b), AMN 9-3 strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity Fo% 95 Wo% 37 En% 60 Wo% 4.9 En% 90 0.35 in modal pyroxene/(pryroxene+olivine)

EET 87511 EET 87717 meteorite silicates show minor fracturing, undulatory extinction and kink bands primarily in olivine Berkley (1990), AMN 11-2 low S2-S3 Wo% 4.5 En% 82 strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity shock metamorphism small euhedral graphite crystals can sometimes be distinguished Fo% 85 fracturing, undulatory extinction and kink bands Wo% 36 En% 55 less than 20 GPa

HaH 064 greater extent of fracturing, undulatory extinction, and kink banding Weber and Bischoff (1996), Weber and Bischoff (1998) medium S4-S6 Wo% 4.6 En% 77 Hammadah al Hamra may be cloudy due to glassy inclusions shock metamorphism diamonds and/or lonsdaleite Fo% 78 sub-grain boundaries may be prominent HaH Wo% 32 En% 55 from 20 GPa to 100 GPa 0.65 in modal pyroxene/(pryroxene+olivine)

LEW 88774 greater extent of fracturing, undulatory extinction, and kink banding Warren and Kallemeyn (1994), Prinz et. al (1994) medium S4-S6 Wo% 4.2 En% 75 strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity may be cloudy due to glassy inclusions shock metamorphism diamonds and/or lonsdaleite Fo% 75 sub-grain boundaries may be prominent Wo% 33 En% 53 6% chromite from 20 GPa to 100 GPa 0.83-0.87 in modal pyroxene/(pryroxene+olivine)

META 78008 greater extent of fracturing, undulatory extinction, and kink banding Takeda et al. (1989) medium S4-S6 Wo% 4.5 En% 76 strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity may be cloudy due to glassy inclusions shock metamorphism diamonds and/or lonsdaleite Fo% 77 sub-grain boundaries may be prominent Wo% 32 En% 55 from 20 GPa to 100 GPa Wo% 16 En% 66 0.05, 0.37 in modal pyroxene/(pryroxene+olivine)

Y-74130 Takeda et al. (1989), Goodrich (1986b) Wo% 4.2 En% 78 strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity Fo% 78 Wo% 32 En% 55 Wo% 14 En% 68 0.5, 1 in modal pyroxene/(pryroxene+olivine)

Subject	is paired with	has shock texture	has reference	has degree of shock metamorphism	has shock stage	has orthopyroxene composition	has fall location	has pyroxene shock metamorphism	has metamorphism mechanism	has shock diagnostic mineral	has olivine composition	has olivine shock metamorphism	has acronym	has augite composition	has minor mineral	has shock pressure	has pigeonite composition	has pyroxene content
ALH 82106	ALH 84136		Goodrich et al. (1987b), AMN 9-3				strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity				Fo% 95			Wo% 37 En% 60			Wo% 4.9 En% 90	0.35 in modal pyroxene/(pryroxene+olivine)
EET 87511	EET 87717 meteorite	silicates show minor fracturing, undulatory extinction and kink bands primarily in olivine	Berkley (1990), AMN 11-2	low	S2-S3	Wo% 4.5 En% 82	strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity		shock metamorphism	small euhedral graphite crystals can sometimes be distinguished	Fo% 85	fracturing, undulatory extinction and kink bands		Wo% 36 En% 55		less than 20 GPa
HaH 064		greater extent of fracturing, undulatory extinction, and kink banding	Weber and Bischoff (1996), Weber and Bischoff (1998)	medium	S4-S6	Wo% 4.6 En% 77	Hammadah al Hamra	may be cloudy due to glassy inclusions	shock metamorphism	diamonds and/or lonsdaleite	Fo% 78	sub-grain boundaries may be prominent	HaH	Wo% 32 En% 55		from 20 GPa to 100 GPa		0.65 in modal pyroxene/(pryroxene+olivine)
LEW 88774		greater extent of fracturing, undulatory extinction, and kink banding	Warren and Kallemeyn (1994), Prinz et. al (1994)	medium	S4-S6	Wo% 4.2 En% 75	strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity	may be cloudy due to glassy inclusions	shock metamorphism	diamonds and/or lonsdaleite	Fo% 75	sub-grain boundaries may be prominent		Wo% 33 En% 53	6% chromite	from 20 GPa to 100 GPa		0.83-0.87 in modal pyroxene/(pryroxene+olivine)
META 78008		greater extent of fracturing, undulatory extinction, and kink banding	Takeda et al. (1989)	medium	S4-S6	Wo% 4.5 En% 76	strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity	may be cloudy due to glassy inclusions	shock metamorphism	diamonds and/or lonsdaleite	Fo% 77	sub-grain boundaries may be prominent		Wo% 32 En% 55		from 20 GPa to 100 GPa	Wo% 16 En% 66	0.05, 0.37 in modal pyroxene/(pryroxene+olivine)
Y-74130			Takeda et al. (1989), Goodrich (1986b)			Wo% 4.2 En% 78	strewn fields, elongated footprints which depends on impact angle, airbursts, and impact velocity				Fo% 78			Wo% 32 En% 55			Wo% 14 En% 68	0.5, 1 in modal pyroxene/(pryroxene+olivine)

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