| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour red, edges grey, texture fine and compact, numerous small and few large inclusions: white, grey, voids |
| colour of fresh break |
red 7.5 R 5/6, edges grey 10 YR 5/1 |
| 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)-1.0, 1x 1.6 (vughy), 0.3 (channel) |
| inclusions |
7.5%, length: <0.04-1.2 |
| sorting |
bimodal: poorly-sorted sand in well-sorted silt |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
infrequent, rounded, very spherical - subspherical, elongate, black, 0.4-0.24 |
|
calciumcarbonate |
frequent, rounded, very spherical - subspheical, elongate, white, yellowish-white, <0.04-0.4 |
|
carbonate pseudomorphoses |
riddled with, rounded - subrounded, very spherical - subspherical, elongate - subelongate, white, yellowish-white, <0.04-1.2 |
|
foraminifera |
singular, very spherical, subspherical, white, 0.12-0.2 |
|
mica |
infrequent, spherical, elongate, angular, white, <0.04-0.06 (dark) |
|
quartz |
infrequent, well rounded - rounded, very spherical - subspherical, grey, clear, <0.04-0.56 |
|
reddish inclusions |
frequent, well rounded - rounded, very spherical - subspherical, reddish brown;reddish brown, <0.04-0.3 |