PEACOCK BLUE MATTE

My original #507-15 glaze from my first glaze class, a dependable semi matte glaze that makes a variety of intense turquoise blue colors depending on the percentage of chromium oxide or cobalt carbonate added.

Peacock Blue Matte

Custer Felspar                    400
Nepheline Syenite A-270    120
Dolomite                             75
Barium Carbonate              160
EPK                                  135
Silica                                 110

Add .4% cobalt carbonate and .6% chromium oxide.

750 ml water.

COPPER GREY

A semi-matte glaze that usually fires a solid pewter grey without much difference between clay bodies.

Occasionally flashes reds and pinks.

Copper Grey Recipe

Feldspar-G200 HP          263
Frit-ferro 3195-2             118
Dolomite                        113
Talc                               132
Ball Clay- Old Mine #4     91
Silica                             283

Add  6g copper carbonate.

VICTORIA'S CREAM

I got this recipe from Victoria Morris.
A creamy matte buttermilk that turns much whiter on the second dip. It has a great smooth texture and varies greatly depending on the clay body.
High in Barium, and turns much more yellow in the presence of iron.

This glaze is extremely matte and will stain with a marker - probably not a good choice for dinnerware.

Victoria's Cream Recipe

Nepheline Syenite A-270        470
Dolomite                               171
Barium Carbonate                  171
EPK                                       60
Zircopax plus                        128
.5% yellow iron oxide

*adding
up to 2% yellow iron oxide will make a pretty yellow

750 ml H2O

MATTE GLAZE 605-61

605-61    Matte

NC-4 Feldspar               410

Nepheline Syenite        123

Dolomite                         77

Barium Carbonate          64

Strontium Carbonate      75

EPK                                 139

Silica                                112                           Total  1000

H₂O:  750 ml

From Roger:
"Probably best to avoid a matte like this (Ca, Mg, Sr, and Ba) with nepheline syenite as the alkali metal source."


I decided to try it anyway - I like the barium/strontium - i hope it will brighten the colors.

RESULTS:

Pink at 8,4,2,1%

At 8% the glaze is textured and ultra-matte with a rough texture.

And a bit of Neodymium to 4% Pink made it a bluish-pink.

Here is 4% on black mountain and granite

*The Praeseodymium seems to need a bit more water - it was very thick at 8%

It seems that the higher percentage stains came out more eggshell then matte.

At 8%, 4%, 4% with a unmeasured (tiny bit) of peacock added, 2 and 1%

At 1% the color is not noticeable

RESULTS:

I like the this glaze a lot.  It has a great feel, like marble.  It seems to get a bit shinier with the higher percentages of stain.   I really like the base color, without any stain added.  I will test this base with a few different clay bodies.

Here are some samples with various mason stains, fired at cone 10 reduction.