126 METALS. ad 90° O' do 35° 16' pa ** O O 32' 00 70 32 na 35 10 po 15 48 oa 54 44 no 19 28 pd 19 28 dd' 00 0 dd 30 0 fa 18 20 dd 45 0 sd 19 6 FIG. 108. FIG. 109. FIG. 110. Form and combinations, d, od, adn, dns, aodpn, aodfns. Faces smooth and bright. Cleavage, rf, traces. Fracture con- choidal... uneven. Opaque. Lustre metallic. Silver-white. Streak the same. Brittle, n = 3 0...3-5. 0 = 13-7 H’l In the matrass yields mercury, leaving a spongy’mass of silver. Easily soluble in nitric acid. •A-g>Hg, silver and mercury in indefinite proportions. Consists, according to the analyses of Hever, Cordier and Klaproth, of ' ’ Silver .... 26-00 27-50 30-00 Mercury . . . 73-30 72-60 04-00 The first and second analyses correspond nearly to the for mula AgHg 3 , the third to Agiig 2 . In attached crystals and thin plates, investing other minerals, compact. Occurs in beds containing mercury and cinnabar. Is found at Moschell-landsberg and some other places in the Palatinate ; Szlana in Hungary; Almaden in Spain; and, it is said, at Ailemont in France, and Salila in Sweden. 16. ABQUEKITE.—Arquerit; Hnidinger. Cubic. 0 111. 00' 70° 32'. (fig. 101.) Opaque. Lustre metallic. Silver-white. Malleable and extensible. 11 = 20...2-5. g = 108. Chemical characters the same as those of amalgam. •A-S'-H&j silver 86-49, mercury 13-61. Domcyko.