| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour grey and red, texture fine and compact, numerous small and few large inclusions: white, voids, mica |
| colour of fresh break |
reddish grey 2.5 YR 5/1, core light reddish brown 2.5 YR 6/4, exterior area light red 2.5 YR 6/8 |
| texture of fresh break |
smooth |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
5%; void form: vughy, channel; void length: 0.04 (vughy), 0.06 (channel)-2.4, 1x 3.6 (vughy), 0.7 (channel) |
| inclusions |
5%, length: <0.04-1.6 |
| sorting |
unsorted |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
frequent, rounded, very spherical - subspherical, elongate, black, 0.04-0.16 |
|
calciumcarbonate |
very frequent, rounded - subrounded, very spherical - subspherical, elongate - very elongate, white, yellowish white, 0.04-1.6 |
|
carbonate pseudomorphoses |
very frequent, rounded - subrounded, very spherical - subspherical, subelongate, white, yellowish white, 0.04-1.2 |
|
foraminifera |
singular, rounded, subspherical, white, 0.2 |
|
mica |
frequent, spherical, elongate, angular, white, dark, <0.04-0.16 |
|
quartz |
very frequent, well rounded - subrounded, very spherical - subspherical, subelongate, clear, grey, white, <0.04-0.4 |
|
reddish inclusions |
very frequent, rounded, very spherical - subspherical, elongate, reddish brown, 0.04-1.0 |