cobalt pigment

Scraped off (ME108) (brown black powder) from filter paper, saved in small flask.  Chopped the paper with some impregnated ppt and added to (ME1pr).

Added 5.5 mL HAc to (MD65). Bubbling; dark magenta liq, a bit opaque. Washed out with ~5 mL H2O.  Filtering on Whatman 14 um:

* (MD100) liq, dark magenta clear.

* (MD101) almost no ppt; maybe whitish?

Decanted supernat of (ME1q) (clear yellowish brown), (ME7) (clear, sly green), and (ME106) (clear white) as (ME109).  Added 35 mL HAc. Lots of bubbling; spilled ~150 mL.

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