Craig Martell on sat 2 dec 00
Lesley axed:
>Craig, can you tell us something about the unispar 50 aka minspar? Is
>that similar to G-200 or Custer spar?
Hi:
Minspar is really close to kona f-4 soda feldspar. I don't remember the
slight differences in analyses. I think that minspar has a bit more
silica. I did fusion buttons of f-4 and minspar on the same tile at cone
10 R and they were too close to call and looked almost the same. Minspar,
or as it says on the bag, Unispar 50, is produced by Unimin Specialty
Minerals in Spruce Pine North Carolina.
later, Craig Martell in Oregon
Lesley Alexander on sat 2 dec 00
Craig, can you tell us something about the unispar 50 aka minspar? Is
that similar to G-200 or Custer spar? Thanks, your glazes sound
fascinating! Lesley
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