| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour reddish brown, core black, texture very coarse, numerous fine to large inclusions:clear, black, grey, red, yellowish, white, mica, voids |
| colour of fresh break |
reddish brown 5 YR 4/4, core dark reddish brown 5 YR 3/2 |
| texture of fresh break |
granular |
| hardness |
soft |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
15%; void form: vughy (0.04-10.5), channel (0.06-2.2); void length: 0.04-10.5 |
| inclusions |
25%, length: <0.04-4.8 |
| sorting |
unsorted |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
very frequent, very angular - subangular, subrounded, subspherical, elongate - subelongate, black, <0.04-2.2 |
|
calciumcarbonate |
frequent, subrounded, very spherical - subspherical, subelongate - very elongate, white, 0.04-1.8 |
|
carbonate pseudomorphoses |
singular, subrounded, subspherical, white, 0.6 |
|
grey inclusions |
singular, subrounded, subspherical, grey, 0.6 |
|
mica |
frequent, spherical, angular, elongate, white, <0.04-0.06 |
|
more inclusions2 |
very frequent, very angular - subangular, subrounded, elongate - very elongate, subspherical, clear, yellowish, 0.06-1.8 |
|
more inclusions3 |
very frequent, subrounded, very spherical - subspherical, subelongate, yellowish brown, 0.04-4.8 |
|
reddish inclusions |
infrequent, rounded - subrounded, very spherical - subspherical, elongate - very elongate, red, reddish brown, 0.04-0.6 |