| |
Visual Examination of Fresh Break
|
| visual examination of fresh break |
colour dark grey, peripheral areas brownish red, texture coarse, numerous small to large inclusions: yellowish white, white, voids |
| colour of fresh break |
dark reddish grey 10 R 3/1, dusky red 10 R 3/2 |
| texture of fresh break |
granular |
| hardness |
hard |
| |
Observation Under the Binocular Stereoscope
(all lengths in mm)
|
| porosity |
10%; void form: vughy, channel; void length: 0.04 (vughy), 0.06 (channel)-1.6 (vughy), 1.5 (channel) |
| inclusions |
17.5%, length: <0.04-1.2 |
| sorting |
bimodal: poorly-sorted sand in well-sorted silt |
| |
Inclusions
(all lengths in mm)
|
|
black inclusions |
singular, well rounded, very spherical - subspherical, elongate, black, 0.04-0.16 |
|
calciumcarbonate |
frequent, rounded, very spherical - subspherical, elongate, yellowish white, white, <0.04-1.0 |
|
carbonate pseudomorphoses |
very frequent, rounded - subrounded, very spherical - subspherical, subelongate, yellowish white, white, 0.04-1.2 |
|
mica |
infrequent, spherical, elongate, angular, white, <0.04-0.06 |
|
more inclusions2 |
infrequent, spherical, orange, 0.12 |
|
quartz |
very frequent, well rounded - rounded, subangular - angular, very spherical - subspherical, clear, grey, 0.08-0.64 |
|
reddish inclusions |
singular, rounded, spherical, reddish brown;reddish brown, 0.04 |