1 min read

Mt Vision Granite - Iron Oxide + Titanium

Experiments with Iron Oxide and Titanium Dioxide
Mt Vision Granite - Iron Oxide + Titanium
Mt Vision "Carmel" - 5% Titanium Dioxide added to the Mt. Vision Tenmoku 10% SG 1.42 on Dark Red (G30)


Titanium Dioxide is often used as an opacifier and I like its effect in VC Matte Yellow from John Britt's book, so I thought to experiment with it. Currently I have just two examples, a line blend test (below) and a sample bowl (above) using the left over 5% mixture to glaze its outside. It's a "Carmel" and I like it.

Glaze Recipe

Material Amount
Mt Vision Granodiorite 70%
Wollastonite 30%
Red Iron Oxide 10%
Titanium Dioxide 5%
Bentonite 2%


Kiln firing procedures are described here.


Test 1

Date 9/14/23
Type: Test Tiles
Temp: Cone 6
Kiln: Test Kiln (T28)
Clay: Sedona Red
Glaze: Mt Vision Tenmoku, 10% Iron Oxide, SG 1.43, 200ml batch
Additive: Titanium Dioxide
Method: 5 tests of 0%, 1%, 2%, 3% and 5% Titanium Dioxide by adding 0, 2, 2, 2 and 4 gm (cumulative 10 gm) without changing the amount of liquid.

Mt Vision Tenmoku blended with Titanium Dioxide (TiO2) on Sedona Red
MV Tenmoku
Titanium Dioxide 1 2 3 4 5
Added +0g +2g +2 +2g +4g
Cumulative +0g +2g +4g +6g +10g
Sample 5 above on 3 clay bodies, B-Mix, Red Sedona and Dark Red


Surprisingly good results were obtained. They speak for themselves, I think. I look forward to experimenting in this direction further. Tiles 4 and 5 are strikingly transformed. Perhaps the 5-10% range should be explored as well.