The British Caving Association

a. Ogof Craig a Ffynnon
b. Immediately after Fourth Boulder Choke
c. White beads, some hollowed out, white and yellow aggregations of small beads
d. Wet mud, layered on top of older mud and angular boulders, in a very large breakdown passage
e. Pictures attached
f. Wet mud is more recent than the potential-CCC development, and has covered them completely. It has been washed off only in a few places by drips from the ceiling, revealing the potential-CCCs. 321363,213896. Approximately 123 metres below surface.

(With thanks to user "Marroscaver" for the help on the trip where I discovered these formations.)

The first set lie just beyond the muddy bank in the overview picture. This second set are immediately to the right of the caver, covering the entire floor of the depression.

a. Ogof Craig a Ffynnon
b. 20 metres beyond the previous set
c. White beads, some hollowed out, white and yellow aggregations of small beads
d. Wet mud, layered on top of older mud and angular boulders, in a very large breakdown passage
e. Pictures attached
f. Again covered in wet mud, with a few patches washed clean. Grid reference and depth below surface basically the same as the previous set.

a. Ogof Craig a Ffynnon
b. Big passage immediately before the junction with the Promised Land pitch
c. White and yellow dust on rocks, mostly seems to have been washed away
d. Angular rocks in a very large breakdown passage
e. Pictures attached
f. Only a small residue, not much remaining. Beyond conservation tape, photography is difficult. 321343,213923. Approximately 123 metres below surface.

Not so sure about this set - it could be selenite/gypsum, or some other mineral. However, it sits on the right mud...

a. Ogof Craig a Ffynnon
b. 75 and 125 metres before Severn Tunnel Junction in Severn Tunnel
c. White/brown breadcrumbs with small snowflake-like structures
d. Fluffy/bobbly mud, in a phreatic rift passage
e. Pictures attached
f. 321468,213595 and 321439,213637. Approximately 108 and 111 metres below surface.

a. Ogof Craig a Ffynnon
b. Junction of tape routes for Helictite Passage and Fifth Boulder Choke
c. White beads bedded into the mud, and some very large cloud-like nuggets
d. Dried mud, layered on top of older angular boulders, in a very large breakdown passage
e. Pictures attached
f. Drying mud is more recent than the potential-CCC development, and has covered some of them completely. 321349,213974. Approximately 127 metres below surface.