SYNONYMES, AND PRIMARY FORMS. 465 



E 



Edelite, see Mesotype, red, earthy. 

 Egerane, see Idocrdse. 

 Egyptian pebble, see Quartz, Jasper. 

 Eiseukiesel, see Quartz, ferruginous. 

 Ekebergite, see Scapolite. 

 Elaeolite, see Fettstein. 

 Elaterite, see Bitumen, elastic. 

 Electrum, see Gold. 

 EMERALD 

 green. 



transparent, precious Emerald, 

 opaque, common. 



blue and yellow of various shades, and colourless; Berjll. 

 blue from Siberia; Agustite. 

 greenish blue from Brazil ; Aquamarine. 

 A regular hexagonal prism, P on a plane belonging 

 to class a, 135. 

 Emery, see Cortmdum. 

 Endellione, see Lead, triple-sulphuret of Lead, Copper, and 



Antimony. 

 EPIDOTE; Akanticone; Arendalite; Deiphinite; Illuderite; 



Pistazite; Thallite. 

 crystallised, A right oblique-angled prism, M on T, 



115*40'. 

 amorphous, 

 granular; Scorza. 

 Ercinite, see Harmotome. 

 Esmarkite, see Lime, borate, siliceous. 

 Essonite, see Cinnamon-stone. 

 EUCHYSIDERITE, see Pyroxene, fusible. 

 EUCLASE. A right oblique-angled prism, M on T, 130 50'. 

 The axis of the prism being perpendicular to the bright 

 cleavage plane. 



EUDYALITE. 



crystallised. An acute rhomboid, P on P', about 74 30'. 

 I am obliged to Mr. Heuland for the loan of 

 the crystal I have measured, which is large and 

 nearly perfect ; but the planes are not sufficiently 

 brilliant to afford a very accurate measurement by 

 the reflective goniometer, 

 amorphous. 

 Eukairite, see Copper, selenuret. 



3 N 



