Vuonnemite, a new mineral

Bussen, I.V.; Zabavnikova, N.I.; Kozyreva, L.V.; Men’shikov, Yu. P.; Lipatova, E.A.; Denisov, A.P.

doi:10.1080/00206817509471703

Cited by 5 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The crystal structure of lamprophyllite was done by Woodrow (1964). In the 1970s, three new minerals were found: orthoericssonite (Moore 1971), bornemanite (Men'shikov et al 1975) and vuonnemite (Bussen et al 1973), and more structural work was done: rinkite (Galli & Alberti 1971), innelite (Chernov et al 1971), lomonosovite (Rastsvetaeva et al 1971), götzenite (Cannillo et al 1972), vuonnemite (Drozdov et al 1974). Khalilov et al (1965b) used available structural information to compare the structures of murmanite, lomonosovite and epistolite (possible structure), and emphasized the stability of the main structural unit, a TS block.…”

Section: Previous Important Observationsmentioning

confidence: 97%

From Structure Topology to Chemical Composition. I. Structural Hierarchy and Stereochemistry in Titanium Disilicate Minerals

Sokolova¹

2006

The Canadian Mineralogist

235

View full text Add to dashboard Cite

The structural hierarchy and stereochemistry have been considered for 24 titanium disilicate minerals that contain the TS (Titanium Silicate) block, a central trioctahedral (O) sheet, and two adjacent (H) sheets of [5]-and [6]-coordinated polyhedra and (Si 2 O 7 ) groups. The TS block is characterized by a planar cell based on translation vectors t 1 and t 2 , with t 1 ≈ 5.5 and t 2 ≈ 7 Å, and t 1 ٙ t 2 close to 90°. The general formula of the TS block is A P 2 B P 2 M H 2 M O 4 (Si 2 O 7 ) 2 X 4+n , where M H 2 and M O 4 are cations of the H and O sheets; M H represents Ti (= Ti + Nb), Zr, Mn 2+ , Ca; M O represents Ti, Zr, Mn 2+ , Ca, Na; A P and B P represent cations at the peripheral (P) sites, i.e., Na, Ca, Ba; X represents the anions O, OH, F and H 2 O; n = 0, 2, 4. Cations in each sheet of the TS block form a close-packed layer, and the three layers are cubic close-packed. There are three topologically distinct TS blocks, depending on the type of linkage of two H sheets and the central O sheet. The H sheets of one TS block are invariably identical and attach to the O sheet in the same way. All structures consist of a TS block and an I (intermediate) block that comprises atoms between two TS blocks. Usually, the I block consists of alkali and alkaline-earth cations, (H 2 O) groups and oxyanions (PO 4 ) 3-, (SO 4 ) 2-and (CO 3 ) 2-. These structures naturally fall into four groups, based on differences in topology and stereochemistry of the TS block. In Group I, Ti = 1 apfu, Ti occurs in the O sheet, and (Si 2 O 7 ) groups link to a Na polyhedron of the O sheet (linkage 1). In Group II, Ti = 2 apfu, Ti occurs in the H sheet, and (Si 2 O 7 ) groups link to two M 2+ octahedra of the O sheet adjacent along t 2 (linkage 2). In Group III, Ti = 3 apfu, Ti occurs in the O and H sheets, and (Si 2 O 7 ) groups link to the Ti octahedron of the O sheet (linkage 1). In Group IV, Ti = 4 apfu (the maximum possible content of Ti in the TS block), Ti occurs in the O and H sheets, and (Si 2 O 7 ) groups link to two Ti octahedra of the O sheet adjacent along t 1 (linkage 3). The stability of the TS block is due to an extremely wide range in Ti(Nb)-O bond lengths, 1.68-2.30 Å, which allows the chemical composition of the TS block to vary widely. In a specifi c structure, only one type of TS block and only one type of I block occur. The TS block propagates close-packing of cations into the I block. General structural principles have been developed for these 24 titanium disilicates, and the relation between structure topology and chemical composition has been established for minerals based on the TS block. SOMMAIRE La hiérarchie structurale et les relations stéréochimiques ont été évaluées pour 24 minéraux disilicatés de titane contenant le bloc TS (silicate de titanium), un feuillet central trioctaédrique (O), et deux feuillets adjacents (H) contenant des polyèdres à coordinence [5] et [6] et des groupes (Si 2 O 7 ). Le bloc TS contient une maille planaire fondée sur les vecteurs de translation t 1 et t 2 , avec t 1 ≈ 5.5 et t ...

show abstract

Section: Previous Important Observationsmentioning

confidence: 97%

From Structure Topology to Chemical Composition. I. Structural Hierarchy and Stereochemistry in Titanium Disilicate Minerals

Sokolova¹

2006

The Canadian Mineralogist

235

View full text Add to dashboard Cite

show abstract

“…), there are two minerals, vuonnemite and epistolite, that are counterparts of lomonosovite and murmanite. Epistolite was originally described by Bøggild (1901) and vuonnemite was described by Bussen et al (1973) who wrote its formula as Na 4 TiNb 2 Si 4 O 17 Á2Na 3 PO 4 . Bussen et al (1973) reported that ''leaching of vuonnemite with water removes the Na 3 PO 4 completely, leaving a residue that gives the X-ray pattern of epistolite''.…”

Section: Previous Workmentioning

confidence: 99%

“…Epistolite was originally described by Bøggild (1901) and vuonnemite was described by Bussen et al (1973) who wrote its formula as Na 4 TiNb 2 Si 4 O 17 Á2Na 3 PO 4 . Bussen et al (1973) reported that ''leaching of vuonnemite with water removes the Na 3 PO 4 completely, leaving a residue that gives the X-ray pattern of epistolite''. The crystal structure of vuonnemite was solved in space group P1 by Drozdov et al (1974) Sokolova and Hawthorne (2004) defined the structural formulae f o r m u r m a n i t e a n d e p i s t o l i t e a s [8]…”

Section: Previous Workmentioning

confidence: 99%

From structure topology to chemical composition. IX. Titanium silicates: revision of the crystal chemistry of lomonosovite and murmanite, Group-IV minerals

Cámara¹,

Sokolova²,

Hawthorne³

et al. 2008

Mineral. mag.

View full text Add to dashboard Cite

The crystal structures of lomonosovite, ideally Na 10 Ti 4 (Si 2 O 7 ) 2 (PO 4 ) 2 O 4 , a = 5.4170(7) Å , b = 7.1190(9) Å , c = 14.487(2) Å , a = 99.957(3)º, b = 96.711(3)º, g = 90.360(3)º, V = 546.28(4) Å 3 , D calc. = 3.175 g cm À3 , and murmanite, ideally Na 4 Ti 4 (Si 2 O 7 ) 2 O 4 (H 2 O) 4 , a = 5.3875(6) Å , b = 7.0579(7) Å , c = 12.176(1) Å , a = 93.511(2)º, b = 107.943(4)º, g = 90.093(2)º, V = 439.55(2) Å 3 , D calc. = 2.956 g.cm À3 , from the Lovozero alkaline massif, Kola Peninsula, Russia, have been refined in the space group P1 (Z = 1) to R values of 2.64 and 4.47%, respectively, using 4572 and 2222 observed |F o 5 4sF| reflections collected with a single-crystal Bruker AXS SMART APEX diffractometer with a CCD detector and Mo-Ka radiation. Electron microprobe analysis gave empirical formulae for lomonosovite (Na 9.

show abstract

“…Its occurrence in pegmatites of the deep zone of the Khibiny massif indicates that unusually alkaline postmagmatic processes accompanied the formation of the unique apatite deposits, and that it i s correct to separate special ultra-alkalic (ultraagpaitic) derivatives of nepheline syenites (Bussen et al, 1975;Borutskiy et al, 1978;Khomyakov, 1978).…”

mentioning

confidence: 95%

Olympite, Na₃PO₄, a new mineral

Khomyakov¹,

Bykova²,

Malinovskiy³

1982

International Geology Review

View full text Add to dashboard Cite

Vuonnemite, a new mineral

Cited by 5 publications

References 0 publications

From Structure Topology to Chemical Composition. I. Structural Hierarchy and Stereochemistry in Titanium Disilicate Minerals

From Structure Topology to Chemical Composition. I. Structural Hierarchy and Stereochemistry in Titanium Disilicate Minerals

From structure topology to chemical composition. IX. Titanium silicates: revision of the crystal chemistry of lomonosovite and murmanite, Group-IV minerals

Olympite, Na₃PO₄, a new mineral

Contact Info

Product

Resources

About

Vuonnemite, a new mineral

Cited by 5 publications

References 0 publications

From Structure Topology to Chemical Composition. I. Structural Hierarchy and Stereochemistry in Titanium Disilicate Minerals

From Structure Topology to Chemical Composition. I. Structural Hierarchy and Stereochemistry in Titanium Disilicate Minerals

From structure topology to chemical composition. IX. Titanium silicates: revision of the crystal chemistry of lomonosovite and murmanite, Group-IV minerals

Olympite, Na3PO4, a new mineral

Contact Info

Product

Resources

About

Olympite, Na₃PO₄, a new mineral