It contained unstable non-crystalline products, residua after calcination of clay components of a ceramic material.
Petra Zemenová, Alexandra Kloužková, Martina Kohoutková 2012, 'Ageing of low-firing prehistoric ceramics in hydrothermal conditions', Processing and Application of Ceramicshttp://tf.uns.ac.rs/publikacije/PAC/pdf/PAC%2015%2007.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The sporocysts contain numerous, nearly uniform granular residua.
Ismail Saad El-Shahawy 2010, 'Eimeria pavoaegyptica sp. nov. (Apicomplexa: Eimeriidae) in faeces of Indian peacocks,Pavo cristatus Linnaeus, 1758 (Galliformes: Phasianidae) from Egypt', Memórias do Instituto Oswaldo Cruz.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762010000800003&lng=en&tlng=en. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Six residua from different crude oils were evaluated for composition and carbon residue forming tendencies.
Schabron J. F., Speight J. G. 2006, 'An Evaluation of the Delayed-Coking Product Yield of Heavy Feedstocks Using AsphalteneContent and Carbon Residue Évaluation du rendement en produit de cokéfaction différéede pétrole lourd à l'aide de la teneur an asphaltènes et du résidu de coke', Oil & Gas Science and Technologyhttp://dx.doi.org/10.2516/ogst:1997006. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The whole residua were evaluated for elemental composition, trace metals content, carbon residue, and specific gravity.
Schabron J. F., Speight J. G. 2006, 'An Evaluation of the Delayed-Coking Product Yield of Heavy Feedstocks Using AsphalteneContent and Carbon Residue Évaluation du rendement en produit de cokéfaction différéede pétrole lourd à l'aide de la teneur an asphaltènes et du résidu de coke', Oil & Gas Science and Technologyhttp://dx.doi.org/10.2516/ogst:1997006. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)