Lapeyreite, Cu 3 O[AsO 3 (OH)] 2 ·0.75H 2 O, a new mineral: Its description and crystal structure

Yazganite, NaFe 3+ 2 (Mg,Mn)(AsO 4 ) 3 .H 2 O, a new mineral : its description and crystal structure

Crystal structure of mahnertite

Calcio-andyrobertsite-2O, KCaCu 5 (AsO 4 ) 4 [AsO 2 (OH) 2 ] · 2H 2 O : its description, crystal structure and relation with calcio-andyrobertsite-1M

Tillmannsite, (Ag 3 Hg)(V, As)O 4 , a new mineral : its description and crystal structure

Rollandite, Cu 3 (AsO 4 ) 2 -4H 2 O, a new mineral : its description and crystal structure

Crystal structure of pushcharovskite

Gilmarite, Cu 3 (AsO 4 ) (OH) 3 , a new mineral; its description and crystal structure

Description and crystal structure of yvonite, Cu(AsO 3 OH)2H 2 O

Zdenekite, NaPbCu 5 (AsO 4 ) 4 Cl.5H 2 O, a new mineral from the Cap Garonne Mine, Var, France

Capgaronnite, HgS·Ag(Cl,Br,I), a new sulfide-halide mineral from Var, France

Defernite from Kombat Mine, Namibia; a second occurrence, structure refinement, and crystal chemistry

Perroudite, a new sulfide-halide of Hg and Ag from Cap-Garonne, Var, France, and from Broken Hill, New South Wales, and Coppin Pool, Western Australia

Gysinite, Pb(Nd,La)(CO 3 ) 2 (OH) · H 2 O, a new lead, rare-earth carbonate from Shinkolobwe, Shaba, Zaire and its relationship to ancylite