First occurrence of the M 2 a 2 b 2 c polytype of argentopolybasite, [Ag 6 Sb 2 S 7 ][Ag 10 S 4 ]: Structural adjustments in the Cu-free member of the pearceite–polybasite group

Piccoliite, NaCaMn 3+ 2 (AsO 4 ) 2 O(OH), a new arsenate from the manganese deposits of Montaldo di Mondovì and Valletta, Piedmont, Italy

Uranotungstite, the only natural uranyl tungstate: Crystal structure revealed from 3D electron diffraction

Alumino-oxy-rossmanite from pegmatites in Variscan metamorphic rocks from Eibenstein an der Thaya, Lower Austria, Austria: A new tourmaline that represents the most Al-rich end-member composition

Armellinoite-(Ce), Ca 4 Ce 4+ (AsO 4 ) 4 ⋅H 2 O, a new mineral species isostructural with pottsite, (Pb 3 Bi)Bi(VO 4 ) 4 ⋅H 2 O

Thermessaite-(NH 4 ), (NH 4 ) 2 AlF 3 (SO 4 ), a new fumarole mineral from La Fossa crater at Vulcano, Aeolian Islands, Italy

Elucidating the natural–synthetic mismatch of Pb 2+ Te 4+ O 3 : The redefinition of fairbankite to Pb 12 2 + (Te 4+ O 3 ) 11 (SO 4 )

Crystal chemistry of the variscite and metavariscite groups: Crystal structures of synthetic CrAsO 4 ⋅2H 2 O, TlPO 4 ⋅2H 2 O, MnSeO 4 ⋅2H 2 O, CdSeO 4 ⋅2H 2 O and natural bonacinaite, ScAsO 4 ⋅2H 2 O

Argentoliveingite, Ag 3+ x Pb 36−2 x As 51+ x S 112 (0 ≤ x < 0.5), a new homeotype of liveingite from Lengenbach, Binntal, Switzerland, and the crystal chemistry of the liveingite group

Mineralogy and Weathering of Realgar-rich Tailings At a Former As-Sb-Cr Mine At Lojane, North Macedonia

Thermodynamic properties of mansfieldite (AlAsO 4 ·2H 2 O), angelellite (Fe 4 (AsO 4 ) 2 O 3 ) and kamarizaite (Fe 3 (AsO 4 ) 2 (OH) 3 ·3H 2 O)

Description and crystal structure of vanderheydenite, Zn 6 (PO 4 ) 2 (SO 4 )(OH) 4 ·7H 2 O, a new mineral from Broken Hill, New South Wales, Australia

Lavinskyite-1 M , K(LiCu)Cu 6 (Si 4 O 11 ) 2 (OH) 4 , the monoclinic MDO equivalent of lavinskyite-2 O (formerly lavinskyite), from the Cerchiara manganese mine, Liguria, Italy

Polloneite, a new complex Pb(-Ag)-As-Sb sulfosalt from the Pollone mine, Apuan Alps, Tuscany, Italy

Écrinsite, AgTl 3 Pb 4 As 11 Sb 9 S 36 , a new thallium-rich homeotype of baumhauerite from the Jas Roux sulphosalt deposit, Parc national des Écrins, Hautes-Alpes, France

Ulfanderssonite-(Ce), a new Cl-bearing REE silicate mineral species from the Malmkärra mine, Norberg, Sweden

A single-crystal X-ray and Raman spectroscopic study of hydrothermally synthesized arsenates and vanadates with the descloizite and adelite structure types

Crystal structures and isotypism of the iron(III) arsenate kamarizaite and the iron(III) phosphate tinticite

Fluor-schorl, a new member of the tourmaline supergroup, and new data on schorl from the cotype localities

Crystal Structures of the Hydrothermally Synthesized Chromates KSc 3 (CrO 4 ) 2 (OH) 6 , KIn 3 (CrO 4 ) 2 (OH) 6 , RbIn 3 (CrO 4 ) 2 (OH) 6 , and AgIn 3 (CrO 4 ) 2 (OH) 6 : a Contribution To the Crystal Chemistry of the Alunite Supergroup