The triplite–triploidite supergroup: structural modulation in wagnerite, discreditation of magniotriplite, and the new mineral hydroxylwagnerite

Werdingite from a pegmatite at Almgjotheii, Rogaland, Norway: The role of iron in a borosilicate with a mullite-type structure

Potassic-aluminotaramite from Sierra de los Filabres, Spain

Boromullite, Al 9 BSi 2 O 19 , a new mineral from granulite-facies metapelites, Mount Stafford, central Australia: a natural analogue of a synthetic “boron-mullite”

Skorpionite, Ca 3 Zn 2 (PO 4 ) 2 CO 3 (OH) 2 ·H 2 O, a new mineral from Namibia: description and crystal structure

Chopinite, [(Mg, Fe) 3 □](PO 4 ) 2 , a new mineral isostructural with sarcopside, from a fluorapatite segregation in granulite-facies paragneiss, Larsemann Hills, Prydz Bay, East Antarctica

Guanacoite, Cu 2 Mg 2 (Mg 0.5 Cu 0.5 )(OH) 4 (H 2 O) 4 (AsO 4 ) 2 , a new arsenate mineral species from the El Guanaco Mine, near Taltal, Chile: Description and crystal structure

New Mn- and rare-earth-rich epidote-group minerals in metacherts : manganiandrosite-(Ce) and vanadoandrosite-(Ce)

Alumino-magnesiohulsite, a new member of the hulsite group, in kotoite marble from east of Verkhoyansk, Sakha-Yakutia, Russia

Pertsevite, a new silicatian magnesioborate mineral with an end-member composition Mg 2 BO 3 F, in kotoite marble from east of Verkhoyansk, Sakha-Yakutia, Russia

Raadeite, Mg 7 (PO 4 ) 2 (OH) 8 : a new dense-packed phosphate from Modum (Norway)

Barquillite, Cu 2 (Cd, Fe)GeS 4 , a new mineral from the Barquilla Deposit, Salamanca, Spain

Zincohoegbomite, a new mineral from eastern Aegean metabauxites

Simple identification and quantification of microdiamonds in rock thin-sections

The optical properties of cummingtonite and their dependence on Fe-Mg order-disorder

Synthesis, properties and stability of Al 3 Si 2 O 7 (OH) 3 (phase Pi), a hydrous high-pressure phase in the system Al 2 O 3 -SiO 2 H 2 O (ASH)