Alice
from
United Kingdom
asks
Is this a high or low iron ball clay?
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Scarva Replies:
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This is a high iron ball clay, hope this helps.
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Pauline
from
United Kingdom
asks
Scarva Ball Clay (HSM) and Scarva Ball Clay (HVAR) -
Do you have the formula of each please? I am looking for the nearest equivalent to Tennessee Ball Clay OM4.
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Scarva Replies:
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Please find below Formula for clays
HVAR Ball Clay:
SiO2 - 60.4
TiO2 - 1.4
Al2O3 - 26.2
Fe2O3 - 0.9
K2O - 2.6
Na2O - 0.4
HSM Ball Clay:
SiO2 - 63
TiO2 - 1.3
Al2O3 - 24
Fe2O3 - 1.2
K2O - 2.6
Na2O - 0.3
MgO - 0.4
CaO - 0.3
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Similar to and replaces SMD (now unavailable).
