| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour red, edges dark grey, texture fine and compact, numerous small and sporadically large inclusions: white, yellowish white, red, voids, mica |
| colour of fresh break |
red 10 R 5/8, dark grey |
| texture of fresh break |
smooth |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
2.5%; void form: vughy, channel; void length: 0.04 (vughy), 0.06 (channel)-0.48 (vughy), 0.4 (channel) |
| inclusions |
5%, length: <0.04-0.8 |
| sorting |
unsorted |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
singular, well rounded - subrounded, very spherical - subspherical, elongate, black, 0.04-0.36 |
|
calciumcarbonate |
riddled with, well rounded - subrounded, very spherical - subspherical, elongate, yellowish white, white, <0.04-0.12 |
|
carbonate pseudomorphoses |
very frequent, well rounded - subrounded, very spherical - subspherical, subelongate, yellowish white, 0.04-0.8 |
|
foraminifera |
singular, very spherical, very elongate, white, red and white, 0.24-0.28 |
|
mica |
frequent, spherical, elongate, angular, white, <0.04-0.06 |
|
quartz |
frequent, clear, <0.04 |
|
reddish inclusions |
frequent, well rounded - subrounded, very spherical - subspherical, elongate, reddish brown, 0.04-0.4 |