| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour dark brownish grey, texture coarse, numerous small to large inclusions: white, yellowish white, red, voids |
| colour of fresh break |
weak red 2.5 YR 5/2 |
| texture of fresh break |
granular |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
7.5%; void form: vughy, channel; void length: 0.04 (vughy), 0.06 (channel)-0.9 (vughy), 0.36 (channel) |
| inclusions |
20%, length: <0.04-1.0 |
| sorting |
bimodal: poorly-sorted sand in well-sorted silt |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
singular, well rounded - rounded, very spherical - subspherical, elongate, black, 0.06-0.36 |
|
calciumcarbonate |
riddled with, well rounded - subrounded, very spherical - subspherical, elongate, yellowish white, white, 0.04-0.8 |
|
carbonate pseudomorphoses |
very frequent, rounded - subrounded, very spherical - subspherical, subelongate, yellowish white, white, 0.04-1.0 |
|
mica |
infrequent, spherical, elongate, angular, white, <0.04-0.06 |
|
more inclusions2 |
frequent, spherical - subspherical, elongate - very elongate, orange, 0.04-2.4 |
|
quartz |
frequent, well rounded - rounded, subangular, very spherical - subspherical, subangular, clear, grey, 0.08-0.6 |
|
reddish inclusions |
infrequent, well rounded, very spherical, elongate, reddish brown, 0.04-0.24 |