Argillite played an important role in seafaring commerce, especially during the boom in maritime fur trading in the early 19th century. The Haida often sold their …
In this research, chemical and mineral composition as well as particle size distribution of argillite were studied and used to develop autoclave aerated concrete as partial substitute of quartz...
Argillite is a fine-grained metasedimentary rock composed of clay particles. It forms when a sedimentary clay or mud is cooked by exposure to intense heat and pressure within the Earth's crust.
Argillite ( ) is a fine-grained sedimentary rock composed predominantly of indurated clay particles. Argillaceous rocks are basically lithified muds and oozes. They contain …
This material, known as argillite, is fragile, and requires careful handling, display, storage, and transportation. The following guidelines are abstracted from Wainwright and Down ( …
Argillite is a type of slate. Black argillite from the islands of Haida Gwaii is unique compared to other types of argillite due to its geological composition and ability to hold strong while being carved. Historically and today, the …
DESCRIPTION: Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of …
Haida artists have been carving argillite to sell to collectors since the early 19th century. An art practice unique to the Haida, argillite carvings can depict oral histories and crests, as well as figures from origin stories and …
One can use the Mohs Scale to help determine what material a stone is. For example, argillite is an approximate hardness of 2.5 on a scale to 10. In an inconspicuous area, such as the bottom or base of the carving, one could use material of a slightly harder material, such as a copper …
L'extraction des argiles communes pour la production de matériaux en terre cuite représente un peu plus de 4,3 millions de tonnes (Mt) en 2014. La production de …