Digitalfire is facing a takedown order from Plainsman Clays. They are revoking permission to "use any Plainsman content" "on any platform". This is broad and vague enough, and this site large enough, that I am unable to comply or even interpret it in the short timeframe (June 27). Please don't panic, I am overwhelmed by the unbelievable support I am getting. We just need to get them to relent on this demand and call off the lawyer (to at least permit commentary). There are lots of backup sites (many people have the API endpoints), don't start downloading or scraping again and overload the server.

Insight-live.com general operation is not affected by this.

Materials for Ceramics

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Topaz Kaolin

Description: No longer available, was made by ECCI

Oxide	Analysis	Formula
SiO2	48.00%	2.20
Al2O3	37.00%	1.00
Fe2O3	0.29%	-
TiO2	0.05%	-
CaO	0.05%	-
MgO	0.18%	0.01
K2O	1.00%	0.03
Na2O	0.10%	-
LOI	12.80%	n/a
Oxide Weight		238.93
Formula Weight		274.00

Related Information

Links

Minerals	Mica See Muscovite.
Minerals	Kaolinite The most fundamental clay mineral. This mineral is found in nature in its purest form as kaolin. How
Materials	Kaolin The purest of all clays in nature. Kaolins are used in porcelains and stonewares to impart whiteness, in glazes to supply Al2O3 and to suspend slurries.
Typecodes	Kaolin Pure clay mineral, there are many brand names of varying purity and iron content.

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By Tony Hansen
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