Carbonaceous aggregates

Nyeki, S. and Colbeck, I. (1995). Fractal dimension analysis of single, in-situ, restructured carbonaceous aggregates. Aem oZ Sci. Technol, 23, 109-120. 

Soot The aggregates leaving a combustion chamber due to incomplete combustion of a carbonaceous fuel. 

For example, studies of the morphology of a number of flame-generated aggregates (different carbonaceous soots, A1203 aerosols, etc.) [203] by both TEM and ALS procedures resulted in D2 = 1.7 0.15, while analysis of silhouettes of computer models of seven proteins [211] gave a value of D2 = 1.120 0.025, etc. 

Carbon black consists of spherical particles (diameter less than 50 nm) that may aggregate and form agglomerates (-250 nm diameter) [1], The carbonaceous particles... 

Sugiura, N. and Krot, A.N. (2007) 26Al-26Mg systematics of Ca-Al-rich inclusions, amoeboid olivine aggregates and chondrules form the ungrouped carbonaceous chondrite Acfer 094. Meteoritics and Planetary Science, 42, 1183-1195. 

Pyrite occurs in sediments in the form of single crystals, crystal clusters, spheres, framboids or as replacement for organic structures. Miroprobe analysis of pyritic aggregates often show the presence of appreciable carbon, and some coarser carbonaceous matter is visible microscopically. Microcrystals of pyrites are frequently found in organic particles when examined in the TEM. Sometimes a thin bright rim occurs around each crystal, which indicates that it is enclosed within a carbonaceous shell (Oberlin et al., 1980)19). 

From a mineralogy viewpoint, IDPs are aggregates of mostly sub-micron-sized crystalline silicates (olivine and pyroxene), amorphous silicates, sulfides, and minor refractory minerals, held together by an organic-rich, carbonaceous matrix. Large fractions, 30-60 wt%, of these IDPs are amorphous silicates, known as glass with... 

Figure 9 Combined elemental maps of (a) the C03.1 carbonaceous chondrite Kainsaz and (b) ungrouped CO/CM-like carbonaceous chondrite Acfer 094. Kainsaz contains abundant small chondrules, CAIs, and AOAs. Acfer 094 is texturally and mineralogically similar to CO chondrites, but contains higher abundance of matrix. AOA = amoeboid ohvine aggregate BO = barred olivine chondrule PO(P)i n = type I (II) porphyritic olivine (pyroxene) chondrule.

Aleon J., Krot A. N., and McKeegan K. D. (2002) Ca-Al-rich inclusions and amoeboid olivine aggregates from the CR carbonaceous chondrites. Meteorit. Planet. Sci. 37, 1729-1755. 

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