Created by Glazy Admin 2015-07-16 06:59:40, updated 2016-12-30 06:18:43

Parent: Potash Feldspar (Theoretical)

Type: Feldspar

Weight: 0.0000
Formula Weight: 618.4544
LOI: 0.3000
Thermal Expansion: 0.0000
Oxide SiO2 Al2O3 CaO K2O Na2O Fe2O3
% Analysis 68.50 17.00 0.30 10.00 3.00 0.10
Formula 7.129 1.043 0.034 0.664 0.303 0.004

Updated December 30, 2016. Analyses for recipes in Glazy using this material have automatically been updated.

Now using 2016 analysis from Pacer, revised 7/22/2016

http://www.pacerminerals.com/wp-content/uploads/2016/10/FELDSPAR-200-325-Tech-Data.pdf

TYPICAL PHYSICAL/CHEMICAL PROPERTIES
Bulk Density 67 lbs./cu.ft.
Loss on Ignition 0.30%
Specific Gravity 2.6
Oil Absorption 23.9
pH 8.0
Moh's Hardness 6.0

TYPICAL CHEMICAL ANALYSIS
Silica (SiO2) 68.5%
Alumina (Al2O3) 17.0% (16.5% min)
Iron (Fe2O3) 0.10% (0.15% max.)
Soda (Na2O) 3.0%
Potash (K2O) 10.0% (9.5% min.)
Lime (CaO) 0.3%
Magnesium (MgO) trace


Information from original import:

Custer feldspar supplies SiO2, Al2O3, K2O, Na2O, CaO, and Fe2O3. Commonly used potash feldspar. Can be used to substitute for Keystone, Buckingham, Yankee, or
Kingman feldspars. Manufactured by Pacer Corporation; comes from Custer, SD. Primarily feldspar, some free quartz and traces of iron and magnesium.

Analyses:
Obstler: (Pacer Corp. 1989)
% 3.0 Na2O 10.0 K2O 0.3 CaO 17.0 Al2O3 68.5 SiO2 0.15 Fe2O3
Cooper & Royle: (Appendix 8)
% 3.0 Na2O 10.4 K2O 0.3 CaO 17.5 Al2O3 68.5 SiO2 0.08 Fe2O3 0.3 LOI
Rhodes:
0.31 Na2O 0.69 K2O 1.05 Al2O3 7.05 SiO2
Chappell:
% 3.0 Na2O 10.4 K2O 0.01 MgO 0.30 CaO 17.5 Al2O3 68.5 SiO2 0.08 Fe2O3 0.3 LOI
Cushing:
0.31 Na2O 0.69 K2O 1.05 Al2O3 7.05 SiO2
Tichane (CB):
% 3.0 Na2O 10.4 K2O 0.3 CaO 17.5 Al2O3 68.5 SiO2 0.1 Fe2O3 0.3 LOI
IMC:
% 2.91 Na2O 10.28 K2O 0.30 CaO 17.35 Al2O3 69.00 SiO2 0.12 Fe2O3 0.04 LOI

Hazards

09/2016 Note: This is a new feature. If there is no safety information below, then 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
Pictograms Signal Word Hazard Statements Health Flammability Hazard Protection
HarmfulHealth Hazard WARNING May cause damage to lungs through prolonged or repeated inhalation.
Suspected of causing cancer through
prolonged or repeated inhalation.
May cause allergy or asthma symptoms or breathing difficulties if inhaled.
May cause skin or eye irritation.

Recipes using this material

Name Amount of Custer Feldspar Temp. Atmospheres Surface Transparency Si:Al R20:RO Author
Reynold's Rap 12 Δ08 - 04 Raku
12.81 0.17 : 0.83 Ceramic Recipes
Nu Clear 5 Δ6 Oxidation
Glossy Transparent 8.36 0.13 : 0.87 Ginger Lukas
Unzicker Brothers Tenmoku 77 Δ9 - 12 Reduction
Salt & Soda
Wood
Semi-glossy 6.48 0.52 : 0.48 Nate Willever
Etch Black 30 Δ9 - 10 Oxidation
Neutral
Reduction
Semi-glossy Opaque 6.25 0.4 : 0.6 Sid Henderson
Pinnel Celadon 24.5 Δ10 Reduction
Glossy Translucent 8.99 0.17 : 0.83 Sid Henderson
Pumpkin 51.17 Δ10 Reduction
4.66 0.23 : 0.77 Glazy Admin
Tenmoku 77 Δ10 - 12 Reduction
Semi-glossy Opaque 6.41 0.5 : 0.5 chance taylor
Test Blue 49 Δ9 - 10 Reduction
Glossy Opaque 5.84 0.27 : 0.73 Hailey Smither
Korean Blue Celadon 52 Δ9 - 10 Reduction
Glossy Translucent 10.68 0.24 : 0.76 Hailey Smither
Splotchy Lavender Cone 10 50 Δ9 - 10 Oxidation
Reduction
4.65 0.28 : 0.72 Clemson University---Ceramic Dept.
Clemson Snow White Stoneware 19.92 Δ9 - 10 Oxidation
Reduction
6.27 0.85 : 0.15 Clemson University---Ceramic Dept.
GVSU Snow White Deflocculated White Stoneware Casting Slip 20 Δ9 - 10 Oxidation
Reduction
5.28 0.89 : 0.11 Clemson University---Ceramic Dept.
Purple Haze 50 Δ10 Reduction
Satin Opaque 10.14 0.25 : 0.75 Glazy Admin
Sue's Black Velvet -new (Cedar Hill) 30 Δ6 Oxidation
Matte Opaque 4.84 0.3 : 0.7 Sue McLeod
Black Matte -old (Cedar Hill) 49.2 Δ6 Oxidation
Matte Opaque 5.14 0.22 : 0.78 Sue McLeod
Sue's SJC -new (Cedar Hill) 31 Δ6 Oxidation
Reduction
Glossy Semi-opaque 8.59 0.5 : 0.5 Sue McLeod
SJC -old (Cedar Hill) 34.9 Δ6 Oxidation
Reduction
Glossy Translucent 8.95 0.6 : 0.4 Sue McLeod
Sapphire Blue (Cedar Hill) 23.5 Δ6 Oxidation
Glossy Opaque 7.82 0.42 : 0.58 Sue McLeod
SM Oribe 30 Δ9 - 11 Reduction
Salt & Soda
Wood
Glossy 9.03 0.12 : 0.88 Christopher Lee
Licorice 20 Δ5 - 7 Oxidation
Glossy Opaque 9.61 0.21 : 0.79 Jeff Szarzi
Chance's Opal 30 Δ10 Oxidation
Reduction
Glossy Translucent 8.05 0.14 : 0.86 chance taylor
Val Cushing V.C. Celadon Lung Chuan 30 Δ9 - 10 Reduction
Semi-glossy Translucent 10.84 0.23 : 0.77 Glazy Admin
pete's cranberry 73.8 Δ10 - 12 Reduction
Glossy Translucent 7.55 0.42 : 0.58 chance taylor
Leach Celadon 40 Δ10 - 12 Reduction
9.97 0.24 : 0.76 chance taylor
Fish Guts 46 Δ9 - 10 Reduction
Glossy Opaque 9.96 0.22 : 0.78 Sid Henderson
Shaner's Oribe 31 Δ9 - 10 Oxidation
Neutral
Reduction
Glossy Translucent 9.57 0.14 : 0.86 Sid Henderson
Malachite (Silverman) 55 Δ9 - 10 Oxidation
Neutral
Reduction
6.88 0.48 : 0.52 Sid Henderson
Secrest Temmoku (Tenmoku) (variation) 53 Δ9 - 10 Oxidation
Reduction
Semi-glossy Opaque 9.36 0.33 : 0.67 Sid Henderson
Tiger Eye Temmoku 25.5 Δ9 - 10 Reduction
Glossy Translucent 9.16 0.21 : 0.79 Sid Henderson
Sun Valley 26.33 Δ9 - 12 Reduction
Glossy Opaque 7.7 0.22 : 0.78 Mark Quinto
Rutile Blue High Fire Glaze Base 32.57 Δ9 - 10 Oxidation
Reduction
Salt & Soda
Wood
Semi-glossy 8.13 0.19 : 0.81 Clemson University---Ceramic Dept.
Burgandy 31 Δ6 Oxidation
Satin 9.99 0.18 : 0.82 Amber York
Narnia Closet Mystery Crystal High Fire Glaze Base 34.34 Δ9 - 10 Oxidation
Reduction
Salt & Soda
Wood
8.36 0.18 : 0.82 Clemson University---Ceramic Dept.
Temmoku High Fire Glaze Base 45 Δ9 - 10 Oxidation
Reduction
Salt & Soda
Wood
Glossy 8.93 0.29 : 0.71 Clemson University---Ceramic Dept.
Starry Night High Fire Glaze Base 43.72 Δ9 - 10 Oxidation
Reduction
Salt & Soda
Wood
12.43 0.26 : 0.74 Clemson University---Ceramic Dept.
Shaner's Oribe High Fire Glaze Base 30.91 Δ9 - 10 Oxidation
Reduction
Salt & Soda
Wood
Glossy 9.41 0.14 : 0.86 Clemson University---Ceramic Dept.
Panama Red High Fire Glaze Base 50.22 Δ9 - 10 Oxidation
Reduction
Salt & Soda
Wood
Glossy 9.62 0.26 : 0.74 Clemson University---Ceramic Dept.
VCU Celadon High Fire Glaze Base 27.34 Δ9 - 10 Oxidation
Reduction
Salt & Soda
Wood
Glossy 8.38 0.18 : 0.82 Clemson University---Ceramic Dept.
O'Riley's White High Fire Glaze 53.51 Δ9 - 10 Oxidation
Reduction
Salt & Soda
Wood
7.63 0.24 : 0.76 Clemson University---Ceramic Dept.
Kaki High Fire Glaze Base 48.67 Δ9 - 10 Oxidation
Reduction
Salt & Soda
Wood
Glossy 9.72 0.26 : 0.74 Clemson University---Ceramic Dept.