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Kushiroite

Formula:
CaAl[AlSiO
 
6
]
System:Monoclinic
Name:The name is in honor of Ikuo Kushiro, Professor Emeritus at the University of Tokyo, Japan


Pyroxene Group. Clinopyroxene Subgroup.

Classification of Kushiroite

Nickel-Strunz 10th (pending) edition ID:9.DA.15

9 : SILICATES (Germanates)
D : Inosilicates
A : Inosilicates with 2-periodic single chains, Si2O6; pyroxene family
Dana 8th edition ID:65.1.3.8

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
1 : Single-Width Unbranched Chains, W=1 with chains P=2
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Type Occurrence of Kushiroite

Type Locality:Allan Hills (ALH85085) meteorite, Allan Hills, Victoria Land, Eastern Antarctica, Antarctica
Geological Setting of type material:Carbonaceous chondrite meteorite
Associated Minerals at type locality:
Pyroxene GroupGrossite

Crystallography of Kushiroite

Crystal System:Monoclinic
Class (H-M):2/m - Prismatic
Space Group:B2/b {B1 1 2/b} {C2/c} {C1 2/c 1}
Cell Parameters:a = 9.609(3) Å, b = 8.652(2) Å, c = 5.274(2) Å
β = 106.06(2)°
Ratio:a:b:c = 1.111 : 1 : 0.61
Unit Cell Volume:V 421.35 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
2.940 (100)
2.904 (36)
2.863 (45)
2.535 (38)
2.509 (28)
2.478 (48)
1.991 (35)

Chemical Properties of Kushiroite

Formula:
CaAl[AlSiO
 
6
]
Essential elements:Al, Ca, O, Si
All elements listed in formula:Al, Ca, O, Si

Relationship of Kushiroite to other Species

Member of Group:
Clinopyroxene Subgroup:
Related Minerals - Nickel-Strunz Grouping):

- +
9.DA.05Donpeacorite
(Mn
2+
 
,Mg)Mg[SiO
 
3
]
 
2
9.DA.05Enstatite
Mg
 
2
[SiO
 
3
]
 
2
9.DA.05Ferrosilite
Fe
 
2
[SiO
 
3
]
 
2
9.DA.10Clinoenstatite
Mg
 
2
[Si
 
2
O
 
6
]
9.DA.10Clinoferrosilite
Fe
2+
 
(Fe
2+
 
,Mg)[Si
 
2
O
 
6
]
9.DA.10Kanoite
Mn
2+
 
(Mg,Mn
2+
 
)[Si
 
2
O
 
6
]
9.DA.10Pigeonite
(Mg,Fe
2+
 
,Ca)(Mg,Fe
2+
 
)[Si
 
2
O
 
6
]
9.DA.15Augite
(Ca,Na)(Mg,Fe
2+
 
,Al,Fe
3+
 
,Ti)[(Si,Al)
 
2
O
 
6
]
9.DA.15Diopside
CaMg[Si
 
2
O
 
6
]
9.DA.15Esseneite
CaFe
3+
 
[AlSiO
 
6
]
9.DA.15Hedenbergite
CaFe
2+
 
[Si
 
2
O
 
6
]
9.DA.15Johannsenite
CaMn
2+
 
[Si
 
2
O
 
6
]
9.DA.15Petedunnite
Ca(Zn,Mn
2+
 
,Mg,Fe
2+
 
)[Si
 
2
O
 
6
]
9.DA.15Davisite
CaScAlSiO
 
6
9.DA.15Grossmanite
CaTi
3+
 
 AlSiO
 
6
9.DA.20Aegirine-augite
(Na,Ca)(Fe
3+
 
,Fe
2+
 
,Mg,Al)Si
 
2
O
 
6
9.DA.20Omphacite
(Ca,Na)(Mg,Al)[Si
 
2
O
 
6
]
9.DA.25Aegirine
NaFe
3+
 
[Si
 
2
O
 
6
]
9.DA.25Jadeite
Na(Al,Fe
3+
 
)[Si
 
2
O
 
6
]
9.DA.25Jervisite
(Na,Ca,Fe
2+
 
)(Sc,Mg,Fe
2+
 
)[Si
 
2
O
 
6
]
9.DA.25Kosmochlor
NaCr[Si
 
2
O
 
6
]
9.DA.25Namansilite
NaMn
3+
 
[Si
 
2
O
 
6
]
9.DA.25Natalyite
Na(V
3+
 
,Cr)[Si
 
2
O
 
6
]
9.DA.30Spodumene
LiAl[Si
 
2
O
 
6
]

Other Names for Kushiroite

Synonyms:
IMA2008-059
Other Languages:

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Kushiroite

Reference List:Makoto Kimura, Takashi Mikouchi, Akio Suzuki, Masaaki Miyahara, Eiji Ohtani, and Ahmed El Goresy (2009): Kushiroite, CaAlAlSiO6: A new mineral of the pyroxene group from the ALH 85085 CH chondrite, and its genetic significance in refractory inclusions. American Mineralogist, 94, 1479–1482.

Internet Links for Kushiroite

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    Localities for Kushiroite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Antarctica
     
    • Eastern Antarctica
      • Victoria Land
        • Allan Hills
    		American Mineralogist, Volume 94, pages 1479–1482, 2009
    Mexico
     
    • Chihuahua
      • Pueblito de Allende
    		American Mineralogist, Volume 94, pages 1479–1482, 2009
    Mineral and/or Locality
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 4th Nov 2009 22:01:03