Gypsum in Ceiling

Gypsum in Ceiling

Gypsum Specifications

The following analysis is for gypsum from Lake Cowcowing, Wyalkatchem.

Chemical Analysis

• Pure Gypsum: 97%
• Calcium: 23%
• Sulphur: 18%
• SiO₂: 2.5%
• CaCO₃: 0.2%
• Fe₂O₃: 0.1%
• NaCl: 0.2%
• Cadmium: <1.25ppm
• Mercury: 1.175ppm
• Lead: <2.5ppm

Particle Size

• Pure Gypsum: 97%
• Calcium: 23.00%
• Sulphur: 18%
• SiO₂: 2.5%
• CaCO₃: 0.2%
• Fe₂O₃: 0.1%
• NaCl: 0.2%
• Cadmium: <1.25ppm
• Mercury: 1.175ppm
• 0.000-0.150mm: 4.9%
• 0.150-0.300mm: 31.0%
• 0.300-0.600mm: 49.2%
• 0.600-1.000mm: 12.9%
• >1.000mm: 2.0%

Screening

• Grizzly: No lumps over 5cm.
• Fine: No lumps over 1cm.