Cushing Satin Matte Black

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Cone: 10
Color: black
Surface: satin black
Firing: reduction

Recipe: (Percent)
Soda Feldspar ……….. 20.00
Cornwall Stone ………. 20.00
Whiting ………………….. 2.00
Silica ……………………. 20.00
OM-4 Ball Clay …….. 10.00
Talc …………………….. 13.00
Dolomite ………………. 15.00
Totals: 100 %
Also add:
Red Iron Oxide ……….. 3.00
Manganese Dioxide ….. 2.00
Cobalt Oxide ………….. 3.00
Chrome Oxide ………… 1.00

Possible Health Hazards:
Silica: free silica-wear a NIOSH approved dust mask when handling dry
material
Talc: wear a NIOSH approved dust mask when handling dry material
Manganese Dioxide: TOXIC-avoid inhalation-wear a NIOSH approved dust mask
when handling dry material
Chrome Oxide: all chromium compounds should be viewed as potentially
carcinogenic

Estimated Thermal Expansion = 6.40×10-6 /deg. C

Unity Formula for Cushing Satin:
0.054 K2O  0.262 Al2O3 2.822 SiO2
0.095 Na2O 0.003 Fe2O3 0.004 TiO2
0.373 CaO  0.002 P2O5  0.001 MnO2
0.477 MgO  10.8:1 Si:Al Ratio
0.000 Li2O

Percentage Analysis for Cushing Satin: (by weight)
68.21 %   SiO2
10.75 % Al2O3
2.05 %    K2O
2.37 %  Na2O
8.42 %    CaO
7.74 %    MgO
0.19 % Fe2O3
0.11 %   P2O5
0.13 %    TiO2
0.03 %   MnO2