1	2	3	4	5	6	7	8	9	10	11	12	13
A														A
B														B
C														C
D														D
E														E
F														F
G														G
H														H
J														J
	1	2	3	4	5	6	7	8	9	10	11	12	13

ExampleWell, 3995-4005 , AAA Formation.

Planktonic foram wackestone with 5-10% disseminated pyrite.
Cuttings sample, Plane-polarised light, Field width 2.2mm.