| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour red and dark grey, texture fine and compact, numerous small to large inclusions: yellow, white, red, voids |
| colour of fresh break |
light red 2.5 YR 6/6,core dark reddish grey 2.5 YR 4/1 |
| texture of fresh break |
smooth |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
5%; void form: vughy; void length: 0.04-1.0, 2x 3.0 |
| inclusions |
10%, length: <0.04-0.5 |
| sorting |
unsorted |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
infrequent, rounded - subrounded, very spherical - subspherical, elongate, black, <0.04-0.18 |
|
calciumcarbonate |
frequent, rounded - subrounded, very spherical - subspherical, elongate, yellow, white, <0.04-0.4 |
|
carbonate pseudomorphoses |
riddled with, rounded - subrounded, very spherical - subspherical, subelongate, yellow, white, <0.04-0.5 |
|
mica |
frequent, spherical, angular, elongate, white, <0.04-0.04 |
|
quartz |
infrequent, subangular, subspherical, elongate, grey, reddish, clear, <0.04-0.12 |
|
reddish inclusions |
frequent, rounded - subrounded, very spherical - subspherical, elongate, reddish brown;reddish brown, <0.04-0.12 |