CO BALT-PY RITES. .503 Geognostic and Geographic Situations. It occurs along with copper pyrites, and common ac- tynolite, in a bed in gneiss, at Nya Bastnas at lliddar- hyttan, in Sweden. 5. Black Cobalt-Ochre. Schwarz Erdkohold, Werner. This species contains two subspecies, viz. Earthy Black Cobalt ochre, and Indurated Black Cobalt-ochre. First Subspecies. Earthy Black Cobalt-Ochre. Schwarzer Kobold Mulm, H enter. Id. Wern Pabst. b. i. s. 205.—Zcrreiblichcr schwarzer Erdko- bold, Wid. s 933.—Loose Black Cobalt-ochre, Kiriv. vol. n. p. 275. Schwarzer Kobold Mulm, Emm. b ii. *■ ^98 ® Cohalt terreux noire friable, Brock, t ii p 397- Coba«t oxyde noire terreux, llauej, t. iv. p. 21 5.-Zerreiblieher schwarzer Erdkohold, Iteuss, b. iv. s. 411.—Schwarzer Kobaltrtmhn, l.tid b i. s. 285 Zerreiblicber schwarzer Erdkohold, Leon* hard, Tabel. s 70 -Cobalt oxyde tcneux, Brong. t. K. p. 118. —Lockcre Kobaltsehwarze, Ilaus. Haudb. b. i. s. 332. External Characters. Its colour is intermediate between brownish and bluish- black ; the bluish-black is essential, the browmsh black it derives from iron. I i 4 U