EPIDOSITE  , in See also:

• PETROLOGY

petrology, a typical member of a See also:

• FAMILY

family of metamorphic rocks composed mainly of See also:

• EPIDOTE

epidote and See also:

• QUARTZ

quartz . In See also:

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

colour they are See also:

• PALE (through Fr. pal, from Lat. palms, a stake, for paglus, from the stem pag- of pangere, to fix; " pole " is from the same original source)

pale yellow or greenish yellow, and they are hard and somewhat brittle . They may occur in more than one way and are derived from several kinds 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 . Some have been epidotic grits and sandstones; others are limestones which have undergone contact-alteration; probably the See also:

• MAJORITY (Fr. majorite; Med. Lat. majoritas; Lat. major, greater)

majority, however, are allied to See also:

• EPIDIORITE

epidiorite and See also:

• AMPHIBOLITE

amphibolite, and are See also:

• LOCAL

local modifications of rocks which were primarily basic intrusions or lavas . The sedimentary epidosites occur with See also:

• MICA

mica-See also:

• SCHISTS (Gr. vxq'ecv, to split)

schists, sheared grits and granulitic gneisses; they often show, on See also:

• MINUTE
• MINUTE (Lat. minutes, small; minuere, to make less)

minute examination, the remains of clastic structures . The epidosites derived from limestones may contain a See also:

• GREAT

great variety of minerals such as See also:

• CALCITE

calcite, See also:

• AUGITE

augite, See also:

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

garnet, See also:

• SCAPOLITE (Gr. O'Kairos, rod, )tLOoc, stone)

scapolite, &c., but their source may usually be inferred from their See also:

• CLOSE
• CLOSE (from Lat. clausum, shut)
• CLOSE, MAXWELL HENRY (1822-1903)

close association with See also:

• TALC

talc-silicate rocks in the See also:

• FIELD (a word common to many West German languages, cf. Ger. Feld, Dutch veld, possibly cognate with O.E. f olde, the earth, and ultimately with root of the Gr. irAaror, broad)
• FIELD, CYRUS WEST (1819-1892)
• FIELD, DAVID DUDLEY (18o5-1894)
• FIELD, EUGENE (1850-1895)
• FIELD, FREDERICK (18o1—1885)
• FIELD, HENRY MARTYN (1822-1907)
• FIELD, JOHN (1782—1837)
• FIELD, MARSHALL (183 1906)
• FIELD, NATHAN (1587—1633)
• FIELD, STEPHEN JOHNSON (1816-1899)
• FIELD, WILLIAM VENTRIS FIELD, BARON (1813-1907)

field . The third See also:

• GROUP

group of epidosites may See also:

• FORM (Lat. forma)

form bands, See also:

• VEINS

veins, or irregular streaks and nodules in masses of epidiorite and See also:

• HORNBLENDE

hornblende-schist . In microscopic See also:

• SECTION
• SECTION (Lat. sectio, cutting, secare, to cut)

section they are often merely a granular 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 of quartz and epidote with some See also:

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

iron oxides and See also:

• CHLORITE

chlorite, but in other cases they retain much of the structure of the originar rock though there has been a See also:

• COMPLETE

complete replacement of the former minerals by new ones . Epidosites when streaked and variegated have been cut and polished as ornamental stones . They are translucent and hard, and hence serve for See also:

• BROOCH, or BROACH (from the Fr. broths, originally an awl or bodkin; a spit is sometimes called a broach, and hence the phrase " to broach a barrel "; see BROKER)

brooch stones, and the simpler kinds of See also:

• JEWELRY (O. Fr. jouel, Fr. joyau, perhaps from joie, joy; Lat. gaudium; retranslated into Low Lat. jocale, a toy, from jocus, by misapprehension of the origin of the word)

jewelry . These rocks occasionally carry See also:

• GOLD
• GOLD [symbol Au, atomic weight 195.7(H = 1),197.2(0 =16)]

gold in visible yellow specks . (J .

S .