| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
brown to gray, irregular fracture, some fine white and dark inclusions, few large gray inclusions |
| colour of fresh break |
7.5YR 5/3 - 7.5YR 5/1 |
| texture of fresh break |
irregular |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
7.5%; void form: channel; vughy; void length: 0.075-1.25 |
| inclusions |
20%, length: 0.025-1 |
| sorting |
moderately sorted sand |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
frequent, angular, spherical - subelongate, black, 0.05-0.25 |
|
brown inclusions |
infrequent, very angular, subspherical, brown, glassy, 0.2-0.25 |
|
calciumcarbonate |
infrequent, rounded, subspherical, white, 0.075-0.5 |
|
carbonate pseudomorphoses |
infrequent, well rounded, spherical, white, 0.5 |
|
mica |
frequent, angular, spherical; very elongate, white; dark, 0.025-0.12 |
|
more inclusions1 |
frequent, very angular, spherical - subspherical, clear, 0.25-1 |
|
more inclusions2 |
singular, very angular, spherical, green, glassy, 0.3 |
|
quartz |
infrequent, angular, spherical - subspherical, clear; white, 0.075-0.5 |
|
reddish inclusions |
frequent, rounded, spherical - subspherical, rust coloured, 0.2-1 |