Bortolanite, Ca 2 (Ca 1.5 Zr 0.5 )Na(NaCa)Ti(Si 2 O 7 ) 2 (FO)F 2 , a New Rinkite-Group (Seidozerite Supergroup) TS-Block Mineral from the Bortolan Quarry, Poços de Caldas Massif, Minas Gerais, Brazil

From Structure Topology to Chemical Composition. XXXI. Refinement of the Crystal Structure and Chemical Formula of Selivanovaite, NaFe 3+ Ti 4 (Si 2 O 7 ) 2 O 4 (H 2 O) 4 , a Murmanite-Group (Seidozerite Supergroup) TS-Block Mineral from the Lovozero Massif, Kola Peninsula, Russia

From Structure Topology to Chemical Composition. XXX. Refinement of the Crystal Structure and Chemical Formula of Shkatulkalite, Na 2 Nb 2 Na 3 Ti(Si 2 O 7 ) 2 O 2 (FO)(H 2 O) 4 (H 2 O) 3 , a Lamprophyllite-Group (Seidozerite Supergroup) TS-Block Mineral from the Lovozero Massif, Kola Peninsula, Russia

Shakhdaraite-(Y), ScYNb 2 O 8 , from the Leskhozovskaya granitic pegmatite, the valley of the Shakhdara River, southwestern Pamir, Gorno-Badakhshanskii Autonomous Region, Tajikistan: New mineral description and crystal structure

From Structure Topology to Chemical Composition. XXIX. Revision of the Crystal Structure of Perraultite, NaBaMn 4 Ti 2 (Si 2 O 7 ) 2 O 2 (OH) 2 F, a Seidozerite-Supergroup TS-Block Mineral from the Oktyabr'skii Massif, Ukraine, and Discreditation of Surkhobite

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Badakhshanite-(Y), Y 2 Mn 4 Al(Si 2 B 7 BeO 24 ), a new mineral species of the perettiite group from a granite miarolic pegmatite in Eastern Pamir, the Gorno Badakhshan Autonomous Oblast, Tajikistan

From structure topology to chemical composition. XXVIII. Titanium silicates: Jinshajiangite from the Oktyabr'skii Massif, Donetsk Region, Ukraine, a new occurrence

From structure topology to chemical composition. XXVII. Revision of the crystal chemistry of the perraultite-type minerals of the seidozerite supergroup: Jinshajiangite, surkhobite, and bobshannonite

Fluorapophyllite-(Cs), CsCa 4 (Si 8 O 20 )F(H 2 O) 8 , a new apophyllite-group mineral from the Darai-Pioz Massif, Tien-Shan, northern Tajikistan

The Crystal Structure of Polylithionite-1 M from Darai-Pioz, Tajikistan: the Role of Short-range Order in Driving Symmetry Reduction in 1 M Li-rich Mica

Laverovite, K 2 NaMn 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F, a New Astrophyllite-supergroup Mineral from Mont Saint-hilaire, QuÉbec, Canada

Redefinition of Zircophyllite, Ideally K 2 NaMn 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F, a Kupletskite-group Mineral of the Astrophyllite Supergroup (in Accord with Ima 15-b) As an Astrophyllite-group Mineral, Ideally K 2 NaFe 2+ 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F (ima 17-d)

The Ericssonite Group of Fe 3+ Disilicate Minerals

The Crystal Structure of Zircophyllite, K 2 NaFe 2+ 7 Zr 2 (Si 4 O 12 ) 2 O 2 (OH) 4 F, an Astrophyllite-supergroup Mineral from Mont Saint-hilaire, QuÉbec, Canada

From Structure Topology To Chemical Composition. Xxii. Titanium Silicates: Revision of the Crystal Structure of Jinshajiangite, NaBaFe 2+ 4 Ti 2 (Si 2 O 7 ) 2 O 2 (OH) 2 F, a Group-ii Ts-block Mineral

Two Astrophyllite-supergroup Minerals: Bulgakite, a New Mineral from the Darai-pioz Alkaline Massif, Tajikistan and Revision of the Crystal Structure and Chemical Formula of Nalivkinite

From Structure Topology To Chemical Composition. Xix. Titanium Silicates: Revision of the Crystal Structure and Chemical Formula of Bafertisite, Ba 2 Fe 2+ 4 Ti 2 (Si 2 O 7 ) 2 O 2 (OH) 2 F 2 , a Group-ii Ts-block Mineral

From Structure Topology To Chemical Composition. Xxi. Understanding the Crystal Chemistry of Barium in Ts-block Minerals

FROM STRUCTURE TOPOLOGY TO CHEMICAL COMPOSITION. XVIII. TITANIUM SILICATES: REVISION OF THE CRYSTAL STRUCTURE AND CHEMICAL FORMULA OF BETALOMONOSOVITE, A GROUP-IV TS-BLOCK MINERAL FROM THE LOVOZERO ALKALINE MASSIF, KOLA PENINSULA, RUSSIA