Technical Data and Physical Characteristics
For Barton Garnet Abrasive Grains And Powders
|
Mineral Characterization: Combination of Almandite and Pyrope
varieties of garnet.
|
General Description: Garnet, a homogeneous mineral, contains no free
chemicals. All oxides and dioxides are combined chemically as follows: Fe2O3Al2(SiO4)3.
The iron and aluminum ions are partially replaceable by calcium, magnesium and manganese.
|
Chemical Analysis:
|
Silicon Dioxide |
(SiO2) |
41.34% |
|
Ferrous Oxide |
(FeO) |
9.72% |
|
Ferric Oxide |
(Fe2O3) |
12.55% |
|
Aluminum Oxide |
(Al2O3) |
20.36% |
|
Calcium Oxide |
(CaO) |
2.97% |
|
Magnesium Oxide |
(MgO) |
12.35% |
|
Manganese Oxide |
(MnO) |
.85% |
|
|
100.14% | |
|
|
Hardness: |
Between 7.5 and 8.5 on Mohs Scale. |
|
Strength: |
Friable to tough. |
|
Particle Shape: |
Sharp, angular, irregular. |
|
Cleavage: |
Pronounced laminations, irregular cleavage planes. |
|
Color: |
Red to pink. |
|
Specific Gravity: |
3.9 to 4.1. |
|
Melting Point: |
1,315ºC - (2,399ºF). |
|
Crystallization: |
Cubic (isometric) system as rhombic dodecahedrons or tetragonal trisoctahedrons (trapezohedrons) or in combinations of the two. |
|
Electrostatic Properties: |
a) Mineral conductivity - 18,000 volts. b)Non-reversible. |
|
Magnetism: |
Slightly magnetic (volume susceptibility =9.999375). |
|
Moisture Absorption: |
Non-hygroscopic, inert. |
|
Pathological Effects: |
None |
|
Quartz: |
None. |
|
Reactivity: |
None. |
|
Harmful Free Silica Content: |
None (silicosis free). |
