iandol on thu 10 jan 02
I have what seems to be reliable information about a source of these two =
minerals from a Brazillian source. I have asked for more details.
What sort of demand is there for these two minerals? I have found it =
impossible to locate a supplier of prepared Amblygonite and I would like =
to use it as a source of Lithium and Phosphorus. A good one for =
enthusiastic adventurous glaze makers!!
Please contact me if you are interested, with an indication of your =
annual requirements.
In addition, if there is good interest shown to make importation and =
processing worth while, do we have anyone who could do this?
I continue to seek a source of Anorthite, which would have use as a =
replacement for Whiting and also some SiO2 and Al203 in stoneware and =
porcelain glazes. Very interesting possibilities!!
Best regards,
Ivor Lewis. Redhill, South Australia
Hank Murrow on thu 10 jan 02
Ivor Lewis wrote;
>I have what seems to be reliable information about a source of these two
>minerals from a Brazillian source. I have asked for more details.
>What sort of demand is there for these two minerals? I have found it
>impossible to locate a supplier of prepared Amblygonite and I would like
>to use it as a source of Lithium and Phosphorus. A good one for
>enthusiastic adventurous glaze makers!!
>Please contact me if you are interested, with an indication of your annual
>requirements.
>In addition, if there is good interest shown to make importation and
>processing worth while, do we have anyone who could do this?
Dear Ivor;
Here 'up over' in Oregon we use a spodumene from Tanco Minerals
which is, or has a large amount of Amblygonite. Here is the hyperglaze
materials file on it:
Spodumene low melt
Cost/lb: $1.20
Silica/Alumina ratio: 3.3:1
Equivalent Molecular Weight: 391.905
Molecular Formula of Spodumene low melt:
K20 0.013 Al2O3 1.050 SiO2 3.465
Na2O 0.019 P2O5 0.252 MnO2 0.001
Li2O 0.968
FeO 0.011
Percentage Analysis
54.33 % SiO2
27.94 % Al2O3
0.31 % K2O
0.31 % Na2O
7.55 % Li2O
9.32 % P2O5
0.21 % FeO
0.03 % MnO
______________
100.00 % TOTAL
Comments:
FROM AMALGAMET OF CANADA;
MINED IN PERTH (Bag says TANCO)
I find it extremely useful in success I've had with shino glazes.
One of my Currie grid Tiles was 50% Low Melt Spodumene and 50% Bone ash.
Very interesting to see first hand the glass-forming qualities of P2O5
clearly demonstrated. I think I have a jpg of this tile if you are
interested.
Cheers, Hank
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