| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour light reddish brown, core light brown, texture coarse, numerous fine to large inclusions: grey, black, red, reddish brown, white, mica, voids |
| colour of fresh break |
reddish brown 2.5 YR 5/4, core light reddish brown 2.5 YR 6/3 |
| texture of fresh break |
granular |
| hardness |
soft |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
7.5%; void form: vughy (0.06-1.2), channel (0.06-0.4); void length: 0.06-1.2 |
| inclusions |
25%, length: <0.04-2.0 |
| sorting |
unsorted |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
very frequent, rounded - subrounded, subangular - very angular, subspherical, black, <0.04-1.0 |
|
calciumcarbonate |
frequent, rounded - subrounded, very spherical - subspherical, white, 0.04-2.0 |
|
grey inclusions |
singular, rounded, subspherical, grey, 0.6 |
|
mica |
frequent, spherical, elongate, angular, white, <0.04-0.06 |
|
more inclusions2 |
frequent, very angular - subangular, subspherical, elongate - very elongate, clear, white, grey, 0.04-1.2 |
|
reddish inclusions |
very frequent, rounded - subrounded, very spherical - subspherical, elongate, red, reddish brown, <0.04-0.9 |