Category: Glaze > Iron > Tenmoku, Temmoku
Created 2015-07-23 09:23:27 by Glazy Admin
Categories: Glaze > Iron > Tenmoku, Temmoku
Firing Temperature: Δ6
Surface Type: Matte

Source/Alternate names: www.frogpondpottery.com

Source/Alternate names: similar oxides to Tenmoku Gold 2 and Tenmoku Gold

Notes: Alisa Clausen: a red brown tenmoku glaze. Is lighter and brighter than Gibby Rose Tenmoku. Has some lighter yellowish streaking
with black spotting where thickest. Stayed where glazed.

Source/Alternate names: similar oxides to Red Brown Tenmoku

Firing Notes: cool maximum rate to 900C hold 1 hour

Notes: Alisa Clausen: Gloss, tenmoku brown black over all surface. Streaking throughout, a lot of movement. Moved, but did not drip off
of test tile. High contrasting mustard gold clusters of small crystals throughout surface. Will observe for shivering due to higher
amount of lithium carbonate

Material Amount Batch Subtotal
Cornwall Stone 61
Red iron oxide 10
Whiting 8
Dolomite 7
Lithium Carbonate 5.5
Silica 5.5
Gerstley Borate 3
Total: 100

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 MgO CaO Li2O K2O Na2O KNaO P2O5 Fe2O3 TiO2 LOI
Cornwall Stone61459.960.091.112.622.014.630.120.09
Red iron oxide109.50.5
Whiting84.493.51
Dolomite71.532.133.33
Lithium Carbonate5.52.243.26
Silica5.55.5
Gerstley Borate30.440.030.80.10.580.010.120.130.010.89
Total10050.959.990.81.728.312.242.642.134.7709.630.0911.49
100% no LOI 57.5611.290.911.959.392.532.982.415.39010.880.11

Unity Molecular Formula (UMF)

FLUXES

RO/R2O

0.1 Na2O
0.09 K2O
0.23 Li2O
0.45 CaO
0.13 MgO
STABILIZERS

R2O3

0.3 Al2O3
0.04 B2O3
GLASS-FORMERS

RO2

2.58 SiO2
OTHER

 

0.18 Fe2O3
SILICA:ALUMINA

SiO2:Al2O3

8.65

FLUX RATIO

R2O:RO

0.42 : 0.58

SiO2:Al2O3 Chart

Closest 81 neighbors in Glaze > Iron > Tenmoku, Temmoku.

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Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 8.65

Similar Base Recipes

Similar RO/R2O Unity Formulas

R2O3 - STABILIZERS RO2 - GLASS FORMERS RO/R2O - FLUXES
Recipe Name ΔTemp Al2O3 B2O3 SiO2 ZrO2 SnO2 TiO2 KNaO K2O Na2O CaO MgO ZnO BaO PbO Li2O SrO
Red Brown Tenmoku, Tenmoku Gold 6 0.3 0.04 2.58 0.19 0.09 0.1 0.45 0.13 0.23
Tenmoku 6 0.3 0.04 2.58 0.19 0.09 0.1 0.45 0.13 0.23
V Tenmoku Gold ^6 Ox. 6 0.3 0.04 2.58 0.19 0.09 0.1 0.45 0.13 0.23
Temmoku Gold V's 5-7 0.3 0.03 2.59 0.19 0.09 0.1 0.45 0.13 0.23
Spencer Ebbinga 2016-06-29 22:01:42
Just a few notes...This is not a Matte glaze (at least in my tests), and should be reclassified as glossy. At apparent specific gravity (SG) of 1.36 through 1.40 the glaze is maroon to brown, thin, and quite frankly ugly. At SG 1.44 transitions of black and orange begin to appear as well as tiny and irregular gold crystal formations. At SG 1.5 the orange to black transitions become much more apparent and gold crystal formations are more prominent, but not completely dispersed. However, the glaze at 1.5 SG is beginning to move and puddle. My tests were performed using cone 6 JG porcelain with a single 2 second non-agitated dip, and fired with the above cooling instructions. I will reevaluate at SG levels from 1.6 - 1.7, try spray applications, and update this review. Will also try "crash-cooling" the kiln from 2232F to 1932F (by opening the kiln lid) and then following the above cooling steps.
Daniel Spruyt 2017-07-06 14:21:54
With my materials a rather ugly brown tending to crawl

Hazards

09/2016 Note: This is a new feature. If a recipe material is not listed, that material's data has not yet been added. Some materials only have GHS ratings, while others only have HMIS ratings. Warnings differ between systems and countries. Glazy does not take any responsibility for accuracy of linked SDS information. Contact your ceramics supplier for safety information for your specific materials.
Globally Harmonized System (GHS) Hazardous Materials Identification System (HMIS) SDS Link
Material Pictograms Signal Word Hazard Statements Health Flammability Hazard Protection
Red iron oxide Health Hazard WARNING May cause damage to lung through prolonged or repeated exposure by inhalation
Whiting Harmful WARNING Causes eye irritation
Dolomite Health Hazard DANGER May cause cancer (Inhalation) 1 0 0 E
Lithium Carbonate Harmful WARNING Harmful if swallowed.
Causes serious eye irritation.
Harmful to aquatic life.
Silica HarmfulHealth Hazard DANGER From 200-Mesh SDS:
May cause cancer by inhalation.
Causes damage to lungs through prolonged or repeated exposure by inhalation.
* 0 0 E
Gerstley Borate