Boraq 2

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Plastic Borate

Date: 2000.10.26

Supplier: Plainsman Clays

Family: 6-Flux Source

Raw Material Weight:
Includes LOI 185.16

Chemistry

CaO	22.14%	[0.73]
K2O	0.52%	[0.01]
MgO	3.50%	[0.16]
Na2O	3.07%	[0.09]
SrO	0.24%	[0.00]
B2O3	30.87%	0.82
Al2O3	2.26%	0.04
SiO2	11.16%	0.34
Fe2O3	0.15%	[0.00]
LOI	26.05%	0.00
Total	99.96

Notes

Boraq 2 is derived from Boraq 1 in response to two issues:

-The formula weight of Boraq 1 was too high. This alerted us that the chemistry was more significantly different from Gerstley Borate than the unity formula suggested. We added 8 dolomite and 8 whiting to match up the percentage analysis numbers much better than they had been.

-Boraq 1 was not working well with iron reds. After making the above changes it became evident that this was because of either the lack of CaO or the lack of limestone-like minerals that occur in Gerstley Borate.

This material has a much lower formula weight (although it is still higher than GB which likely contained more clay and tramp minerals than Boraq).

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