You are on C-Chondrites Page

CK4/5 - Name: DaG 275 , S2
rare Karoonda C-type: CK4/5 was found on march 24th 1997 in Dar Al Gani desert;

CK4  -  KAROONDA

Fell November 25, 1930

Meta C-Chondrite - Dho 225 A unique, black stone weighing 90 g was found in Dhofar 225 .

Available are complete or part slices or crumbs.

exiting new type:

Meta C-Chondrite are the most rare of all so far known meteorites and are of highest interest for cometary study: "Meta-C-Chondrites" are metamorphosed carbonaceous
chondrites. Only 4 meteorites (all Antarctican) were so far known to belong to the      
Meta C-Chondrite group: Belgica 7904, Yamato 82162, Y 86720, Y 86789; - for details/availibility on this most interesting meteorite ask: mars@man.li

NWA 1665 CK3 - Anomalous:  UNUSUAL CARBONACEOUS CHONDRITE

Classification and mineralogy (A. Greshake and M. Kurz): it is a type 3 carbonaceous chondrite with chondrules, irregular shaped olivine-rich objects, and mineral fragments set into a fine-grained matrix of Fe-rich olivine, Ca-pyroxene, troilite, and FeNi-metal; chondrules are typically 200-400 µm in size and porphyritic olivine and pyroxene chondrules clearly dominate over radiating or cryptocrystalline types; olivine, Fa25.7 (range Fa0.7-37.6); pyroxene, Fs12 (range Fs2.5-48.3); oxygen isotopic composition (R. Clayton and T. Mayeda, UChi): d18O = -1.03, d17O = -4.95; shock stage, S1; weathering grade, W2. Main mass with anonymous finder; type specimen 22 g plus one polished thin section MNB. The meteorite is basically unshocked (shock stage S1) Measurements of oxygen isotopic compositions give a ä18O of –1.03 and a ä17O of –4.95, similar to the data obtained for the ungrouped type 3 carbonaceous chondrite Dar al Gani 055 (R. Clayton and
T. Mayeda, UChi): δ18O = -1.03‰, δ17O = -4.95‰ and (I. Franchi and R. C. Greenwood, OU): δ18O = -1.88‰, δ17O = -5.43‰,
Δ17O = -4.45‰ are clear of the CO3 chondrite field and possibly located on an extension of the CK3 range;

Available only through us!

NWA 1465 C-3 - Anomalous:  UNUSUAL CARBONACEOUS CHONDRITE

CH3 - SaU290
 

CO3 - DaG 083 

DaG 188 CO3

DaG 191 CO3

DaG 194 CO3

DaG 289 CO3

CO III - DaG 749  

C1 ( CI ) Orgueil, France: rare Orgueil type 1 Carbonaceous Chondrite, Fall ! cometary origin!

CI2, (CI/2)  Tagish Lake

thermal history: fine clays are thought to have formed by the alteration of the coarse phyllosilicates during aqueous

processing, some well defined chondrules in the C- poor portion ( There are at least 2 lithologies in Tagish Lake (C-rich and C- poor). Note: In type 2 carbonaceous chondrites the products of aqueous alteration can be ubiquitously located

in ratios far greater than within type 3 Carbonaceous Chondrites. It is noteworthy that those are also present in all components (matrix, phenocrysts, chondrules, CAI).

CM2, Murchison ( Murchinson ), (Mighei - type2) very fresh , CM-Chondrite, fell on September 28th, 1969 in Victoria, legally exported; with fresh black fusion crust and/or interesting and detailed interior!

CV - Sayh Al Uhaymir 085

Sayh Al Uhaymir

Date of find: 2002, January 11 Type: Stone CV carbonaceous chondrite

Mineralogy and classification (M. Ivanova, M. Nazarov, Vernad): The meteorite consists of matrix, olivine aggregates, chondrules, their fragments and CAIs. The matrix/chondrule ratio is 0.8. Olivine is Fa0.7-80.5; low-Ca pyroxene is Fs0.7-22.6; pigeonite, augite, diopside and Al-diopside are also present. Mesostasis in chondrules is altered; accessories are kamacite and taenite, magnetite, chromite, sulphides and sulphates. Two observed CAIs are 0.9 . 1.0 mm and 1.7 . 1.9 mm in size, mostly fine grained, consisting of melilite, spinel, Al-diopside, and anorthite. Matrix is fine grained and altered, with development of phyllosilicates. Microprobe analyses were performed at UTenn.