| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour reddish brown, texture middle fine and compact, numerous large inclusions: white, yellowish, grey, red, mica |
| colour of fresh break |
reddish brown 5 YR 5/4 |
| texture of fresh break |
irregular |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
2.5%; void form: vughy; void length: 0.08-2.8 |
| inclusions |
10%, length: <0.04-0.92 |
| sorting |
bimodal: poorly-sorted sand in well-sorted silt |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
frequent, well rounded - subrounded, very spherical - subspherical, elongate, black, <0.04-0.2 |
|
brown inclusions |
singular, subrounded, very spherical, brown - red, 0.95 |
|
calciumcarbonate |
frequent, very spherical - subspherical, subelongate, white, 0.04-0.4 |
|
carbonate pseudomorphoses |
singular, subelongate, white, black, 0.4-0.6 |
|
mica |
very frequent, spherical, angular, elongate, white, dark, <0.04-0.06 |
|
quartz |
frequent, well rounded - subangular, very spherical - subspherical, subelongate, grey, white, reddish, clear, 0.06-0.6 |
|
reddish inclusions |
frequent, well rounded - subrounded, very spherical - subspherical, red, reddish brown, <0.04-0.44 |