... and artroeite, the presence of slightly puckered structural layers correlates with the presence, in the powder pattern of the two minerals, of a very strong reflection with the same indices as the structural layers. This is not true for acuminite and tikhonenkovite, where markedly puckered layers are present...

... on that side of the Pb atom. The structure is compared with those of acuminite and tikhonenkovite. Copyright © 1995 by the Mineralogical Society of America 1995 ...

...Fig. 12. The structure of acuminite consists of (a) rows of [Al 2 F 8 (OH) 2 ] dimers parallel to c* and seen end-on and (b) linked by interstitial [9] Sr 2+ ions and hydrogen bonds involving (OH) – groups of the structural unit and interstitial (H 2 O) groups. ...

... halide minerals are distributed among the various categories of compatibility as listed here. Rokühnite, calomel, bromargyrite, bismoclite, mitscherlichite, gearksutite, antarcticite, tachyhydrite, acuminite, bararite, thomsenolite, carnallite, claring-bullite, simmonsite, cryolite, bischofite...