LEPIDOLITE  , or LITHIA-See also:

• MICA

MICA, a See also:

• MINERAL

mineral of the mica See also:

• GROUP

group (see Mica) . It is a basic See also:

• ALUMINIUM (symbol Al; atomic weight 27.0)

aluminium, See also:

• POTASSIUM [symbol K (from kalium), atomic weight 39.114 0=16)]

potassium and See also:

• LITHIUM [symbol Li, atomic weight 7•oo (0=16)]

lithium fluo-silicate, with the approximate See also:

• FORMULA
• FORMULA (Lat. diminutive of forma, shape, pattern, &c., especially used of rules of judicial procedure)

formula KLi [Al(OH,F)2] Al(SiO3)3 . Lithia and See also:

• FLUORINE (symbol F, atomic weight 19)

fluorine are each See also:

• PRESENT

present to the extent of about 5%; See also:

• RUBIDIUM [symbol Rb, atomic weight 85.45 (0=16)]

rubidium and See also:

• CAESIUM (symbol Cs, atomic weight 132.9)

caesium are sometimes present in small amounts . Distinctly See also:

• DEVELOPED

developed See also:

• MONOCLINIC

monoclinic crystals or cleavage sheets of large See also:

• SIZE

size are of rare occurrence, the mineral being usually found as scaly aggregates, and on this See also:

• ACCOUNT
• ACCOUNT (through O. Fr. acont, Late Lat. comptum, cornputare, to calculate)

account was named lepidolite (from Gr . XE7ric, See also:

• SCALE
• SCALE (1) A

scale) by M . H . See also:

• KLAPROTH, HEINRICH JULIUS (1783-1835)
• KLAPROTH, MARTIN HEINRICH (1743-1817)

Klaproth in 1792 . It is usually of a See also:

• LILAC

lilac or See also:

• PEACH
• PEACH, CHARLES WILLIAM (1800-1886)

peach-blossom See also:

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

colour, but is sometimes greyish-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, and has a pearly lustre on the cleavage surfaces . The hardness is 21-4 and the sp. gr . 2.8-2.9, the optic axial See also:

• ANGLE (from the Lat. angulus, a corner, a diminutive, of which the primitive form, angus, does not occur in Latin; cognate are the Lat. angere, to compress into a bend or to strangle, and the Gr. ayKOS, a bend; both connected with the Aryan root ank-, to

angle See also:

• MEASURES

measures 500-700 . It is found in See also:

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

pegmatite-See also:

• VEINS

veins, often in association with See also:

• PINK

pink See also:

• TOURMALINE

tourmaline (See also:

• RUBELLITE

rubellite) and some-times intergrown in parallel position with See also:

• MUSCOVITE

muscovite . Scaly masses of considerable extent are found at Rozena near Bystrzitz in See also:

• MORAVIA (Ger., Ma/wen; Czech, Morava)

Moravia and at Pala in See also:

• SAN

San Diego 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:

• CALIFORNIA
• CALIFORNIA, LOWER (Baja California)
• CALIFORNIA, UNIVERSITY OF

California .

The material from Rozena has been known since 1791, and has some-times been cut and polished for ornamental purposes: it has a See also:

• PRETTY

pretty colour and spangled See also:

• APPEARANCE (from Lat. apparere, to appear)

appearance and takes a See also:

• GOOD, JOHN MASON (1764-1827)

good See also:

• POLISH

polish, but is rather soft . At Pala it has been extensively See also:

• MINED

mined for the preparation of lithium and rubidium salts . Other localities for the mineral are the See also:

• ISLAND (O.E. ieg =isle, +land')

island of UtS in See also:

• SWEDEN
• SWEDEN [Sverige]
• SWEDEN, NORWAY AND

Sweden, and See also:

• AUBURN
• AUBURN (from the Low Lat. alburnus, whitish, light-coloured)

Auburn and See also:

• PARIS
• PARIS (also called ALEXANDROS)
• PARIS, ALEXIS PAULIN (1800-x881)
• PARIS, BRUNO PAULIN GASTON (1839-1903)
• PARIS, FRANCOIS DE (169o-1727)
• PARIS, LOUIS PHILIPPE ALBERT
• PARIS, TREATIES OF (1814-1815)

Paris in See also:

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

Maine, U.S.A.; at Alabashka near Mursinka in the Urals large isolated crystals have been found, and from Central See also:

• AUSTRALIA

Australia transparent cleavage sheets of a See also:

• FINE

fine lilac colour are known . The lithium-See also:

• IRON [symbol Fe, atomic weight 55.85 (0=16)]

iron mica zinnwaldite or lithionite is closely allied to lepidolite, differing from it in containing some ferrous iron in addition to the constituents mentioned above . It occurs as greyish silvery scales with hexagonal outlines in the See also:

• TIN (Lat.- stannum, whence the chemical symbol " Sn "; atomic weight =117.6, 0=16)

tin-bearing granites of Zinnwald in the See also:

• ERZGEBIRGE

Erzgebirge, Bohemia and of See also:

• CORNWALL

Cornwall . (L . J .