SODALITE  , a See also:

• GROUP

group of See also:

• ROCK
• ROCK (O.Fr. rake, Sp. rota, Ital. rocca; possibly from a Lat. form rupica, from rupes, rock)
• ROCK, DANIEL (1799–187t)

rock-forming minerals comprising the following isomorphous See also:

• SPECIES

species: Sodalite . Na4(AICI) Alz (SiO4) 3 Hatlynite (Naz, Ca)z(NaSO4.Al)Alz(SiOs)s Noselite Na4(NaSO4•Al)Alz (SiO4)1 Lazurite Na4(NaSz•Al)AIz(SiO4) 3 They are thus See also:

• SODIUM [symbol Na, from Lat. natrium; atomic weight 23.00 (0=16)]

sodium (or See also:

• CALCIUM [symbol Ca, atomic weight 40.0 (o= x6)]

calcium) See also:

• ALUMINIUM (symbol Al; atomic weight 27.0)

aluminium silicates, with chloride, sulphate or sulphide . In their orthosilicate formulae, as above written, and in their cubic crystalline See also:

• FORM (Lat. forma)

form they See also:

• PRESENT

present a certain resemblance to the members of the See also:

• GARNET
• GARNET, or GARNETT, HENRY (1555—1606)

garnet group . Crystals usually have the form of the rhombic See also:

• DODECAHEDRON (Gr. Melia, twelve, and ESpa, a face or base)

dodecahedron, and are often twinned with interpenetration on an octahedral See also:

• PLANE

plane . They are See also:

• WHITE
• WHITE, ANDREW DICKSON (1832– )
• WHITE, GILBERT (1720–1793)
• WHITE, HENRY KIRKE (1785-1806)
• WHITE, HUGH LAWSON (1773-1840)
• WHITE, JOSEPH BLANCO (1775-1841)
• WHITE, RICHARD GRANT (1822-1885)
• WHITE, ROBERT (1645-1704)
• WHITE, SIR GEORGE STUART (1835– )
• WHITE, SIR THOMAS (1492-1567)
• WHITE, SIR WILLIAM ARTHUR (1824--1891)
• WHITE, SIR WILLIAM HENRY (1845– )
• WHITE, THOMAS (1628-1698)
• WHITE, THOMAS (c. 1550-1624)

white, or often See also:

• BLUE (common in different forms to most European languages)

blue in See also:

• COLOUR (Lat. color, connected with celare, to hide, the root meaning, therefore, being that of a covering)

colour, and have a vitreous lustre . The hardness is 51, and the specific gravity 2.2-2.4 . These minerals are characteristic constituents of igneous rocks See also:

• RICH, BARNABE (c. 1540-1617)
• RICH, CLAUDIUS JAMES (1787-1821)
• RICH, JOHN (1692-1761)
• RICH, PENELOPE, LADY (c. 1562–1607)
• RICH, RICHARD, 1ST BARON RICH (1490?-1567)

rich in soda, and they also occur in metamorphic limestones . The species sodalite (so named because it contains soda) occurs as well-formed, colourless crystals in the ejected See also:

• LIMESTONE

limestone blocks of See also:

• MONTE

Monte Somma, See also:

• VESUVIUS (also Vesevus in ancient poets)

Vesuvius, and in the sodalite-See also:

• SYENITE

syenite of Julianehaab in See also:

• SOUTH
• SOUTH, ROBERT (1634–1716)

south See also:

• GREENLAND (Danish, &c., Gronland)

Greenland . Massive blue material is See also:

• COMMON

common in the elaeolite-syenites of See also:

• SOUTHERN

southern See also:

• NORWAY
• NORWAY (Norge)

Norway, Gyergyo-Ditr6 in Transylvania, Miyask in the Urals, See also:

• LITCHFIELD

Litchfield in See also:

• MAINE
• MAINE, ANNE LOUISE BENEDICTE DE BOURBON
• MAINE, SIR HENRY JAMES SUMNER (1822–1888)

Maine, See also:

• DUNGANNON

Dungannon in See also:

• ONTARIO
• ONTARIO, LAKE

Ontario, See also:

• ICE (a word common to Teutonic languages; cf. Ger. Eis)

Ice See also:

• RIVER

river in Kootenay See also:

• COUNTY (through Norm. Fr. comae, cf. O. Fr. cunte, conk', Mod. Fr. comae, from Lat. comitatus, cf. Ital. comitato, Prov. comtat; see COUNT)

county, See also:

• BRITISH

British See also:

• COLUMBIA

Columbia, &c.; at the three last-named localities it is found as large masses of a See also:

• BRIGHT, JOHN (1811-188g)
• BRIGHT, SIR CHARLES TILSTON

bright See also:

• SKY (M. Eng. skie, cloud; O. Eng. skua, shade; connected with an Indo-European root sku, cover, whence " scum," Lat. obscurus, dark, &c.)

sky-blue colour and suitable for cutting as an ornamental See also:

• STONE
• STONE (0. Eng. shin; the word is common to Teutonic languages, cf. Ger. Stein, Du. steen, Dan. and Swed. sten; the root is also seen in Gr. aria, pebble)
• STONE, CHARLES POMEROY (1824-1887)
• STONE, EDWARD JAMES (1831-1897)
• STONE, FRANK (1800-1859)
• STONE, GEORGE (1708—1764)
• STONE, LUCY [BLACKWELL] (1818-1893)
• STONE, MARCUS (184o— )
• STONE, NICHOLAS (1586-1647)

stone . Recently, large masses with a See also:

• PINK

pink colour, which quickly fades on exposure to See also:

• LIGHT

light, have been met with in elaeolite-See also:

• PEGMATITE (from Gr. 1r3 y ea, a bond)

pegmatite at See also:

• KISHANGARH

Kishangarh in See also:

• RAJPUTANA

Rajputana . Haiiynite, or hauyne (named after R . J .

Flatly), occurs as bright blue crystals and grains in the lavas (See also:

• PHONOLITE (Gr. ~vi7, sound, and Moos, stone)

phonolite, tephrite, &c.) of Vesuvius, See also:

• ROME
• ROME (Roma)

Rome, the See also:

• EIFEL

Eifel, &c . Noselite, or nosean, is found as greyish crystals in the sanidine bombs of the Eifel . Lazurite is an important constituent, together with some haiiynite and sodalite, of lapis-lazuli (q.v.) . (L: J .