| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour red, peripheral area dark grey, texture fine and compact, numerous small and few large inclusions: white, yellowish, grey, red, voids |
| colour of fresh break |
red 10 R 5/8 |
| texture of fresh break |
smooth |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
10%; void form: vughy, channel; void length: 0.04 (vughy), 0.08 (channel)-0.5, 1x 1.5 (vughy), 0.2 (channel) |
| inclusions |
15%, length: <0.04-1.0 |
| sorting |
unsorted |
| |
Inclusions
(all lengths in mm)
|
|
calciumcarbonate |
very frequent, rounded - subrounded, very spherical - subspherical, subelongate, yellowish white, white, <0.04-1.0 |
|
carbonate pseudomorphoses |
riddled with, rounded - subrounded, very spherical - subspherical, subelongate, yellowish white, white, <0.04-0.5 |
|
mica |
frequent, spherical, elongate, white, <0.04-0.06 |
|
quartz |
very frequent, rounded, subangular - angular, spherical - subspherical, clear, grey, reddish, 0.04 |
|
reddish inclusions |
frequent, well rounded - subrounded, very spherical - subspherical, subangular, reddish brown, red, <0.04-0.6 |