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Garnet Sand

Average Chemical Composition (Typical)

Al2O3 18.06%
Fe2 O3 29.5%　
Si O2 37.77%　
Mg O 4.75%　
CaO 9%　
Ti O2 1.0%　
P2 O5 0.05%　
Mn O 0.5%　
Zr O2 Traces　
CHLORIDE CONTENT Less than 25ppm　
SOLUBLE SALTS Less than 100 ppm　
PH OF AQUEOUS MEDIUM 6.93
GYPSUM CONTENT Nil　
MOISTURE CONTENT Less than 0.5%　
CARBONATE CONTENT Traces　
LOSS ON IGNITION Nil　
METAL CONTENT Traces　

OTHER CHARACTERISTICS

Crystal System Cubic
Habit Trapezohedron
Fracture　 Sub-Conchoidal　
Durability Very good　　
Free Flow 90% Minimum　
Susceptibility to Acid None　
Moisture Absorption Non Hygroscopic, Inert.　
Magnetism Very Slightly Magnetic　
Conductivity Less than 25 Microsiemens per Meter　
Radio Activity Not Detectable above background　
Pathological Effects None　
Free Silica Content None　

Mineralogical Composition

Garnet (Almandite) 97-98%
Ilmenite 1-2%
Quartz <0.5%
Others 0.5%

PHYSICAL CHARACTERISTICS

Specific Weight 4.1 g/cm3
Average Bulk 2.4 g/cm3
Hardness 7 (Mohs Scale)
Mesh Size MM 16/30 MESH 20/40 MESH 20/60 MESH 30/60 MESH 40/60 MESH 80 MESH
14 1.40 　 　 　 　 　 　
16 1.18 0-5 　 0-1 　 　 　
18 1.00 10-20 　 　 　 　 　
20 0.85 20-35 0-5 0-5 0-1 　 　
30 0.60 20-35 30-60 10-25 0-10 0-5 　
40 0.43 0-12 35-60 25-50 10-45 40-65 0-5
50 0.30 　 0-18 25-45 40-70 30-50 0-50
60 0.25 　 0-5 0-15 5-20 10-20 15-50
70 0.21 　 　 　 0-10 0-7 10-55
80 0.18 　 　 0-5 0-5 　 5-40
90 0.16 　 　 　 　 　 0-15


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