ALBITE  , a See also:

• MINERAL

mineral of the See also:

• FELSPAR, or FELDSPAR

felspar See also:

• GROUP

group, belonging to the See also:

• DIVISION (from Lat. dividere, to break up into parts, separate)

division of the plagioclases (q.v.) . It is a See also:

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

sodium and See also:

• ALUMINIUM (symbol Al; atomic weight 27.0)

aluminium silicate, NaAlSi3Os, and crystallizes in the anorthic See also:

• SYSTEM

system . Like all the felspars it possesses two cleavages, one perfect and the other less so, which are here inclined at an 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 of 86° 24' . On the more perfect cleavage, which is parallel to the basal See also:

• PLANE

plane (P), is a system of See also:

• FINE

fine striations, parallel to the second cleavage (M), due to twinning according to the albite See also:

• LAW
• LAW (0. Eng. lagu, M. Eng. lawe; from an old Teutonic root lag, " lie," what lies fixed or evenly; cf. Lat. lex, Fr. loi)
• LAW, JOHN (1671—1729)
• LAW, WILLIAM (1686-1761)

law " (See also:

• FIGS

figs. r and 2) . The hard- ness is 6, and the specific gravity 2.63 . The See also:

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

colour is usually pure 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, hence the name (from the See also:

• LAT

Lat. albus) for the See also:

• SPECIES

species . Albite forms an essential constituent of many acidic igneous and crystalline rocks; in granites, diorites, andesites, &c., it occurs as a See also:

• PRIMARY

primary mineral, whilst in crystalline See also:

• SCHISTS (Gr. vxq'ecv, to split)

schists, phyllites and crystalline limestones it is of secondary (metamorphic) origin . The beautifully See also:

• DEVELOPED

developed crystals so abundant in crystal-lined crevices of Alpine granites and gneisses have been deposited, with other minerals, from See also:

• SOLUTION (from Lat. solvere, to loosen, dissolve)

solution; the crystals lining See also:

• VEINS

veins in the slates of See also:

• TINTAGEL, or TREVENA

Tintagel in See also:

• CORNWALL

Cornwall have the same origin . Several varieties of albite are distinguished, of which the following may be here specially mentioned . Pericline (from the Gr. trepu<Xt -I r, " sloping ") is the name given to large opaque white crystals from the See also:

• CHLORITE

chlorite-schists of the See also:

• ALPS

Alps; they are See also:

• TABULAR

tabular parallel to the direction of perfect cleavage and are twinned according to the " pericline law." Peristerite (from the Gr . 7repurTEpa, a See also:

• DOVE
• DOVE (Dutch duyve, Dan. due, Ice. dufa, Ger. Taube)

dove) is characterized by a beautiful bluish sheen, somewhat resembling that seen on the See also:

• NECK (O. Eng. hnecca; the word appears in many Teutonic languages; cf. Dutch ride, Ger. Nacken; in O. E. the common word was heals; cf. Ger. Hals)

neck of a See also:

• PIGEON

pigeon; it is found mainly in See also:

• ONTARIO
• ONTARIO, LAKE

Ontario . See also:

• AVENTURINE, or AVANTURINE

Aventurine and See also:

• MOONSTONE

moonstone varieties occur, though these See also:

• SPECIAL

special appearances are more usually displayed by the See also:

• OLIGOCLASE

oligoclase and See also:

• ORTHOCLASE

orthoclase felspars respectively .

(L . J . S.) 'ALSO, See also:

• JOSEPH
• JOSEPH, COMTE DE (1785-1870)
• JOSEPH, FATHER (FRANCOIS LECLERC DU TREMBLAY) (1577-1638)

JOSEPH, a See also:

• SPANISH

Spanish Jewish theologian of the ,5th See also:

• CENTURY (from Lat. centuria, a division of a hundred men)

century . He was author of a very popular See also:

• BOOK

book on the See also:

• PHILOSOPHY (Gr. gthos, fond of, and vo4 (a, wisdom)

philosophy of Judaism, entitled 'Iqqarim or Fundamentals . See also:

• MAIMONIDES

Maimonides in the 12th century had formulated the principles of Judaism in thirteen articles; Albo reduced them to three: (i) The Existence of See also:

• GOD

God, (ii) See also:

• REVELATION, BOOK OF

Revelation and (iii) Divine Retribution . Albo set the example of minimizing Messianism in the formulation of Jewish beliefs . Though he fully maintained the See also:

• MOSAIC (corresponding to Lat. opus musivum, from Gr. µovoeiov, an artificial grotto often decorated with mosaics; the word is only found in the sense of mosaic in late Greek, which generally uses k oXI yrlµa)

Mosaic author-See also:

• SHIP

ship of the Law and the binding force of tradition, he discriminated between the essential and the non-essential in the practices and beliefs of Judaism . An See also:

• ENGLISH

English See also:

• TRANSLATION

translation of the 'Iqqarim appeared in the See also:

• HEBREW

Hebrew See also:

• REVIEW (Fr. revue, from revoir, to see again, Lat. re and videre)

Review, vols. i.-iii .