| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour light brown and light red, texture middle fine, numerous small and few large inclusions: grey, reddish, white, voids |
| colour of fresh break |
light red 2.5 YR 7/6, core reddish yellow 7.5 YR 7/6 |
| texture of fresh break |
granular |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
7.5%; void form: vughy; void length: 0.06-2.6 |
| inclusions |
20%, length: <0.04-1.4 |
| sorting |
bimodal: poorly-sorted sand in well-sorted silt |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
frequent, well rounded - rounded, very spherical - subspherical, elongate, black, <0.04-0.32 |
|
calciumcarbonate |
frequent, well rounded - rounded, very spherical - subspherical, elongate, yellowish white, white, <0.04-0.2 |
|
carbonate pseudomorphoses |
singular, spherical - subspherical, yellowish white, white, 0.28-0.4 |
|
foraminifera |
infrequent, very spherical, subelongate, white, 0.08-0.48 |
|
mica |
infrequent, spherical, elongate, angular, white, dark, <0.04-0.06 |
|
quartz |
very frequent, well rounded - rounded, subangular, very spherical - subspherical, elongate, grey, white, clear, 0.04-1.2 |
|
reddish inclusions |
frequent, well rounded - rounded, very spherical - subspherical, elongate, reddish brown;reddish brown, <0.04-1.4 |