| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour reddish yellow, core dark grey, texture coarse, numerous fine to large inclusions: clear, white, grey, black, reddish brown, mica, voids |
| colour of fresh break |
reddish yellow 5 YR 6/6, core grey 5 YR 5/1 |
| texture of fresh break |
irregular |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
10%; void form: vughy; void length: 0.08-2.8 |
| inclusions |
17.5%, length: <0.04-2.0 |
| sorting |
unsorted |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
very frequent, very angular - subangular, subrounded - rounded, spherical - subspherical, elongate - subelongate, black, <0.04-0.96 |
|
calciumcarbonate |
infrequent, rounded - subrounded, spherical - subspherical, elongate, white, yellowish, grey, 0.04-1.4 |
|
carbonate pseudomorphoses |
singular, subrounded, subspherical, yellowish white, 0.8 |
|
grey inclusions |
singular, subrounded, spherical, grey, 0.8-1.0 |
|
mica |
frequent, angular, subspherical, elongate, white, dark, <0.04-0.08 |
|
more inclusions2 |
infrequent, subangular - very angular, subrounded, elongate, subelongate, very elongate, spherical - subspherical, clear, grey, white, 0.06-1.4 |
|
more inclusions3 |
singular, well rounded, very spherical, yellowish brown, 0.6 |
|
reddish inclusions |
frequent, subrounded, very spherical - subspherical, subelongate, reddish brown;reddish brown, 0.04-2.0 |