Solargil St Amand GSA Clay

Pics from March 2020 firing. Cone 10 down in front, softening at back, slow cooled in reduction.

Manufacturer: Solargil

From the Saint Amand clay pit in Puisaye, used in La Borne. Excellent for throwing.
GSA005 has 15% of 0-0.5mm grog. There are also a number of other St Amand clays available.

Recommended bisque firing range 1000 - 1020C
Recommended firing range 1260 - 1300C
Either bisque or once fire.

Composition:

SiO2	TiO2	Al2O3	Fe2O3	P2O5	MnO	CaO	MgO	K2O	Na2O	LOI
65.3	0.8	21.1	1.41	0.0	0.02	0.22	0.15	1.68	0.32	9.0

15% of 0-0.5mm grog

Shrinkage:
wet to dry 4.5 - 4.8%
dry to 1280C 7.3%
Porosity @ 1280C 1.8%
Porosity @ 1300C 0.9%
Thermal expansion 0.58%@20-500C