500 Scientific Intelligence. 



belong to the orthorhombic system. Hardness = 2 ; specific grav- 

 ity = 6 '886. An analysis yielded : 



As 2 3 PbO MnO, FeO CI 



11-69 80-70 0-54 • 800 = 100-93 



The formula deduced is PbAs 2 7 -f2PbCl 2 . It is probably 

 identical with a mineral noted by Nordenskidld as occurring with 

 ecdeinite at Langban. 



Rhodotilite is a rose-red radiated mineral with silky luster ; it 

 is referred on the basis of an optical examination to the triclinic 

 system. Hardness = 4 — 5 ; specific gravity = 3*03. An analysis 

 yielded : 



Si0 2 MnO FeO CaO MgO PbO H 2 



43-67 37-04 Ml 9-38 0-15 0-77 7-17 = 99-29 



The formula deduced is 2(Mn,Ca)Si0 3 +H„0. — (Efo. Ah. 

 StocJch., Nov., 1888. 



Inesite. — A hydrated silicate of manganese and calcium, ap- 

 parently the same mineral as that later called rhodotilite by 

 Flink. It occurs in fibrous radiated forms of a flesh-red color 

 with other manganese ores in the Dillenburg region, Germany. 

 It is referred to the triclinic system as the result of the optical 

 examination. Hardness, 6-7 ; specific gravity, 3*103. Analysis: 

 Si0 2 MnO FeO CaO MgO H 2 A1 2 3 



43-92 38-23 0-69 8-00 0-28 8-49 0-29=99-85 



Described by A. Schneider in Zeitschr. Geol. Ges., vol. xxxix, 

 829, 1888. Cf. also Flink, OEfv. Ah. StocJch., Jan. 9, 1889. 



Caryopilite (Karyopilite). — A hydrated silicate of manganese 

 allied to inesite. It occurs in botryoidal or reniform shapes, 

 having a,matted fibrous structure, at the Harstig mine, near Pajs- 

 berg, Sweden. The color is brown, the hardness 3*5, and the spe- 

 cific gravity 2-83-2-91. Analysis: 



Si0 2 MnO MgO CaO PbO Fe 2 3 A1 2 3 Alk. H 2 CI 

 36-16 46-46 4"80 0-28 0'37 1-33 0\35 0"20 9*81 0-09=99-85 



Approximate formula, 4Mn0.3Si0 2 .3H 2 0. Described by A. Ham- 

 berg in Geol. For. Forhandl., vol. xi, 27, 1889. 



Ochrolite. — An antimonate of lead from Pajsberg, isomorph- 

 ous with heliophyllite (see above). It occurs in tabular ortho- 

 rhombic crystals, of a sulphur-yellow color, and adamantine 

 luster. An analysis gave: PbO 76-52, CI 7*72, Sb 2 3 17*59 (as 

 loss), leading to the formula Pb 4 Sb o 7 + 2PbCl„. Described by 

 G. Flink in (Efv. Akad. Stochh., Jan. 9, 1889. 



Facellite. — Described by E. Soacchi (Rend. Accad. Napoli. 

 Dec. 1888) as a new mineral from Mt. Somma. It occurs in col- 

 orless and slender acicular crystals, optically uniaxial, and prob- 

 ably belonging to the hexagonal system. Hardness about 6 ; 

 specific gravity 2-493. An analysis yielded : 

 Si0 2 A1 2 3 K 2 Na 2 



37-73 33-09 29-30 0-37 = 100-49 



This corresponds to the formula KAlSi0 4 or K 2 . A1 2 3 . 2SiO,. 

 The author has evidently overlooked the description of Kalio- 



