| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour grey, edges light red, texture coarse and compact, numerous large inclusions: yellowish white, white, reddish, grey, voids |
| colour of fresh break |
pinkish grey 5 YR 6/2, light red 10 R 6/8 and light reddish brown 2.5 YR 7/3 |
| texture of fresh break |
irregular |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
10%; void form: vughy; void length: 0.04-0.4 |
| inclusions |
20%, length: <0.04-4.8 |
| sorting |
bimodal: poorly-sorted sand in well-sorted silt |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
infrequent, rounded - subrounded, spherical - subspherical, elongate, black, 0.04-0.16 |
|
calciumcarbonate |
very frequent, well rounded - subrounded, very spherical - subspherical, elongate - subelongate, yellowish white, white, <0.04-1.4 |
|
carbonate pseudomorphoses |
frequent, rounded - subrounded, very spherical - subspherical, subelongate, yellowish white, white, 0.04-4.8 |
|
mica |
frequent, spherical, elongate, angular, white, dark, <0.04-0.06 |
|
more inclusions2 |
very frequent, subrounded, angular - very angular, subelongate - very elongate, yellowish brown, 0.04-3.2 |
|
quartz |
singular, well rounded, very spherical, grey, 0.12 |
|
reddish inclusions |
infrequent, rounded - subrounded, spherical - subspherical, elongate, reddish brown, red, 0.04-0.32 |