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Greenstripe Clay

Alternate Names: GS Blend

Description: Fireclay

Oxide Analysis Formula
Na2O 1.30% 0.08
Al2O3 27.70% 1.00
SiO2 57.20% 3.50
Fe2O3 2.00% 0.05
LOI 10.30%n/a
Oxide Weight 324.78
Formula Weight 362.07


A medium-fine ground fireclay. A good choice for economy and consistency.
It burns yellow buff in oxidation and quite brown in reduction firing (partially due to its soluble salts content). Its overall appearance is comparable to Pine Lake fireclay, although it is cleaner.

The manufacturer claims (2023): "Greenstripe is 200 mesh, fine-grained plastic clay with excellent strength in the high-fired ceramic pottery industry. It is also used as a raw material in the manufacture of construction building compound products. It is heavily used throughout the plastic, paint, and ceramic industries."

Related Information


Materials Fireclay
Typecodes Clay Other
Clays that are not kaolins, ball clays or bentonites. For example, stoneware clays are mixtures of all of the above plus quartz, feldspar, mica and other minerals. There are also many clays that have high plasticity like bentonite but are much different mineralogically.
Greenstripe clay page at US Mine website


Frit Softening Point 2970F
By Tony Hansen
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