Natural pigment- Burnt glauconite
Aluminosilicate of iron, silica and potassium oxide of variable composition, belongs to the group of hydromica
Color: yellow-brown, with green shadow.
Chemical description: aluminosilicate of iron and potassium oxide. Chemical formula: (K,Na)(Fe3+,Al,Mg)₂(Si,Al)₄O₁₀(OH)₂Fe²⁺₃ (PO₄) ₂ 8H₂O
Light resistance: 8
Alkali resistance: 5
Acid resistance: 5
Used for techniques: acrylic, tempera, watercolor, gouache, oil, fresc, ceramic
The pigment was made by crushing and grinding. There may be insight uncrushed mineral in the package.
Pigments may contain harmful substances, so remember about safety rules.
- use eye and hand protection,
- cover the respiratory tract, do not eat,
- keep away from children,
- wash your eyes in case the pigment gets into your eyes