Rutile crystals
This glaze has mixed grey and black large micro-crystalline clusters. It also
has to a lesser extent,
Peeking beneath the large grey micro-crystalline clusters which dominate the
surface is a
The glaze seen here, hiAlk_Z3P_Oribe, belongs to the line blend of a
woof-Oribe variant
A neighbor of this glaze, hiAlk_Z3P_Oribe, has been seen previously
here.
In contrast to that glaze, hiAlk_Z3P_Oribe replaces the zircon in the previous
glaze with the
150 deg F an hour to 250 deg F
400 deg F an hour to 1800 deg F
300 deg F an hour to 2050 deg F
120 deg F an hour to 2310 deg F with a hold of 20 minutes at 2310 deg F
300 deg F an hour to 1850 deg F then a 2 hr hold at 1850 deg F
300 deg F an hour to 1750 deg F then a 1 hr hold at 1750 deg F
300 deg F an hour to 1700 deg F then a 3 hr hold at 1700 deg F
25 deg F an hour to 1650 deg F then a 1 hour hold at 1650 deg F
K2O 0.11
Al2O3 0.54
SiO2 3.31
molecular percent Silica 65.01%
added:
3% copper carbonate
clusters of saturated yellow as well as black.
Interestingly the yellow micro-crystals often overlap the
silvery grey
clusters.
glossy olive green substrate. There are opaque pale
grey dendritic precipitates within this
substrate.
and a high Alkali glaze containing titanium.
crystal forming agent titanium. The variety of crystals
that grow in a titanium bearing
glaze is high.
Close up Images of the surface
Image of the glaze hiAlk_Z3P_Oribe
inside
outside
bowl is ~3.5 inches in diameter
oxidation firing to cone 10 in an electric kiln
Firing profiles
Up Fire profile cone 10
Down Fire Profile cone 10
Clay body is a grolleg porcelain from Clay Art Center in Tacoma, WA.
glaze composition
Empirical Formula hiAlk_Z3P_Oribe :
Na2O 0.45
CaO 0.40
MgO 0.04
P2O5 0.52
TiO2 0.18