| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour greenish white, core very pale red, texture middle fine, numerous small and few large inclusions: reddish, white, grey, voids |
| colour of fresh break |
pale yellow 5 Y 8/4, core pink 5 YR 8/3 |
| texture of fresh break |
regular |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
5%; void form: channel, vughy; void length: 0.08 (channel), 0.06 (vughy)-1.4 (channel), 0.6 (vughy) |
| inclusions |
15%, length: <0.04-2.4 |
| sorting |
moderately sorted sand |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
infrequent, rounded - subrounded, subangular, spherical - subspherical, elongate, black, 0.04-0.16 |
|
calciumcarbonate |
singular, subspherical, white, 2.4 |
|
mica |
frequent, spherical, elongate, white, <0.04-0.04 |
|
quartz |
frequent, well rounded - angular, spherical - subspherical, clear, grey, brownish, 0.04-0.3 |
|
reddish inclusions |
very frequent, rounded - subrounded, subangular, very spherical - subspherical, elongate, red, reddish brown, <0.04-0.52 |