| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour grey, peripheral area red, coarse texture, numerous small to large inclusions: white, grey, red, voids |
| colour of fresh break |
dark grey 5 YR 4/1, interior area red 10 R 5/8 |
| texture of fresh break |
irregular |
| 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)-1.0 (vughy), 0.6 (channel) |
| inclusions |
27.5%, length: <0.04-1.1 |
| sorting |
bimodal: poorly-sorted sand in well-sorted silt |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
singular, rounded, very spherical - subspherical, black, 0.06-0.16 |
|
calciumcarbonate |
very frequent, rounded, very spherical - subspherical, elongate, yellowish white, white, 0.04-0.8 |
|
carbonate pseudomorphoses |
very frequent, rounded, very spherical - subspherical, elongate, yellowish white, white, 0.06-1.1 |
|
mica |
infrequent, spherical, elongate, white, <0.04-0.06 |
|
quartz |
very frequent, well rounded - subrounded, subangular, very spherical - subspherical, subelongate, grey, clear, white, 0.04-1.1 |
|
reddish inclusions |
infrequent, rounded, very spherical - subspherical, elongate, red, reddish brown, <0.04-0.5 |