| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour light reddish brown, core dark grey, texture very coarse, numerous fine to large inclusions: yellowish, reddish, black, voids |
| colour of fresh break |
pink 7.5 YR 7/4, core grey 7.5 YR 5/0 |
| texture of fresh break |
granular |
| hardness |
soft |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
15%; void form: vughy (0.08-5.6), channel (0.08-2.4); void length: 0.08-5.6 |
| inclusions |
25%, length: <0.04-4.8 |
| sorting |
unsorted |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
frequent, subrounded, subangular - angular, elongate, black, 0.04-0.72 |
|
calciumcarbonate |
very frequent, well rounded - subrounded, subangular, spherical - subspherical, subelongate - very elongate, yellowish, white, grey, <0.04-2.4 |
|
carbonate pseudomorphoses |
infrequent, rounded, subspherical, white, 0.04-1.0 |
|
foraminifera |
frequent, well rounded, rounded, very spherical, subspherical, very elongate, grey, white, 0.16-0.8 |
|
mica |
infrequent, angular, elongate, white, <0.04-0.04 |
|
more inclusions2 |
very frequent, subangular - very angular, spherical - subspherical, elongate - subelongate, yellowish brown, greyish white, 0.08-4.8 |
|
quartz |
infrequent, well rounded - rounded, very spherical - subspherical, grey, 0.12-0.28 |
|
reddish inclusions |
frequent, rounded, very spherical - subspherical, elongate, red, reddish brown, <0.04-1.2 |