Concerning tetrahedrites: How much to lump and how far to split?

Plumbogaidonnayite, PbZrSi 3 O 9 ⋅2H 2 O, a new Pb-member of the gaidonnayite group from the Saima alkaline complex, Liaoning Province, China

Kodamaite, Na 3 (Ca 5 Na) 6 Si 16 O 36 (OH) 4 F 2 ·14− x H 2 O, x = ∼5, A New Layered Alkali-Alkaline Earth Fluorosilicate-Hydrate and Member of the Gyrolite Supergroup, from Mont Saint-Hilaire, Quebec, Canada: Description, Crystal-Chemical Considerations, and Genetic Implications

Synthesis of Fe-deficient eudialyte analogues: Relationships between the composition of the reaction system and crystal-chemical features of the products

Selsurtite, (H 3 O) 12 Na 3 (Ca 3 Mn 3 )(Na 2 Fe)Zr 3 □Si[Si 24 O 69 (OH) 3 ](OH)Cl⋅H 2 O, a new eudialyte-group mineral from the Lovozero alkaline massif, Kola Peninsula, Russia

Sergevanite, Na 15 (Ca 3 Mn 3 )(Na 2 Fe)Zr 3 Si 26 O 72 (OH) 3 ·H 2 O, a new eudialyte-group mineral from the Lovozero alkaline massif, Kola Peninsula

Structural state of rare earth elements in eudialyte-group minerals

The Transition from Miaskitic to Agpaitic Rocks, as Highlighted by the Accessory Phase Assemblages in the Passa Quatro Alkaline Complex (SouthEastern Brazil)

Visible and short-wave infrared reflectance spectroscopy of selected REE-bearing silicate minerals

Selivanovaite, NaTi 3 (Ti,Na,Fe,Mn) 4 [(Si 2 O 7 ) 2 O 4 (OH,H 2 O) 4 ]· n H 2 O, a new rock-forming mineral from the eudialyte-rich malignite of the Lovozero alkaline massif (Kola Peninsula, Russia)

Crystallization and destabilization of eudialyte-group minerals in peralkaline granite and pegmatite: a case study from the Ambohimirahavavy complex, Madagascar

Nolzeite, Na(Mn,□) 2 [Si 3 (B,Si)O 9 (OH) 2 ]·2H 2 O, a new pyroxenoid mineral from Mont Saint-Hilaire, Québec, Canada

Magmatic, hydrothermal and subsolidus evolution of the agpaitic nepheline syenites of the Sushina Hill Complex, India: implications for the metamorphism of peralkaline syenites

Zirconosilicates in the kakortokites of the Ilímaussaq complex, South Greenland: Implications for fluid evolution and high-field-strength and rare-earth element mineralization in agpaitic systems

FERRO-FERRI-NYBØITE, NaNa 2 (Fe 2+ 3 Fe 3+ 2 )(Si 7 Al)O 22 (OH) 2 , A NEW CLINOAMPHIBOLE FROM MONT SAINT-HILAIRE, QUÉBEC, CANADA: DESCRIPTION AND CRYSTAL STRUCTURE

STEEDEITE, NaMn 2 [Si 3 BO 9 ](OH) 2 : CHARACTERIZATION, CRYSTAL-STRUCTURE DETERMINATION, AND ORIGIN

Vladykinite, Na 3 Sr 4 (Fe 2+ Fe 3+ )Si 8 O 24 : A new complex sheet silicate from peralkaline rocks of the Murun complex, eastern Siberia, Russia

LAURENTIANITE, [NbO(H 2 O)] 3 (Si 2 O 7 ) 2 [Na(H 2 O) 2 ] 3 , A NEW MINERAL FROM MONT SAINT-HILAIRE, QUEBEC: DESCRIPTION, CRYSTAL-STRUCTURE DETERMINATION AND PARAGENESIS

PARTING SHOTS

Compositions and Petrogenetic Significance of the Eudialyte Group Minerals from Sushina, Purulia, West Bengal