J. Sejkora et al., MINERALS OF THE PLUMBOGUMMITE-PHILIPSBORNITE SERIES FROM MOLDAVA DEPOSIT, KRUSNE HORY MTS., CZECH-REPUBLIC, Neues Jahrbuch fur Mineralogie Monatshefte, (4), 1998, pp. 145-163
Plumbogummite and philipsbornite from the Moldava ore deposit, Krusne
hory Mts., Czech Republic, were identified by X-ray powder diffraction
and chemical analyses. The unit cell parameters of both minerals and
IR spectrum and TG analysis of plumbogummite are given. The chemical d
ata confirmed the existence of isomorphous substitution in the A, B an
d X positions of the general formula AB(3)(XO4)(XO3OH)(OH)(6).