230 Scientific Intelligence. 



Vanadinite from Wanlockhead, Scotland : V 2 O s 18-04, P 2 6 0'27 r 

 As 3 6 0-34, PbO 78-39, CI 2-53 = 99-57. 



Annabergite from the Gem mine, Silver Cliff, Colorado : As„0 & 

 36-64, NiO 32-64, CoO 0'50, CaO 3'51, MgO 3-74, H„0 23'94 = 

 100-95. — Amer. Phil. Soc. Philad., Oct. 2, 1885. 



9. Brief notices of some recently described Minercds. — LAvenite 

 is a mineral of chestnut-brown to yellowish color occurring in 

 monoclinic prismatic crystals. The elements are a : b : c (vert.) = 

 1-0811 : 1 : 0-8133, /i=71° 24^-'. Cleavage parallel to the ortho- 

 pinacoid. Specific gravity 3-51. An analysis by Cleve yielded : 

 Si0 2 33-71, ZrO„ 31-65, Fe 2 3 (?) 5-64, MnO 5-06, CaO 11-00, Na 2 

 11 *32, ign. 1 -03 = 99-41, which makes it related to catapleiite, euco- 

 lite, etc. The locality is a small island, near Stoko, in the Lange- 

 snndsfjord, Norway. — W. O. Brogger in the Geol. For. Fork., 

 vii, 598. 



Cappelenite occurs in hexagonal crystals (c=0'4301) of a brown 

 color, a greasy to vitreous luster on fracture surfaces. No distinct 

 cleavage. Specific gravity 4-407. An analysis by Cleve yielded: 

 Si0 2 14-16, B 2 3 [17-13], Y 2 3 52-55, La 2 (D'i 2 )0 3 2-97, Ce 2 O s 1-23,. 

 ThO„ 0-79, BaO 8-15, CaO 0-61, Na 2 0-39, K 2 0-21, H 2 1-81 = 

 100. Occurs very sparingly in small vein of angite-seyenite on 

 the Lille Aro in the Langesundsfjord, Norway. — W. C. Brogger 

 in Geol. For. Forh., vii, 599. 



Pinnoite is a new boi'ate of magnesium from Stassfurt. It 

 occurs with boracite and picromerite (kainite). It is massive, 

 fine-granular to compact though with sometimes a slightly fibrous 

 structure. The color is sulphur- to straw-yellow or pistacbe-green. 

 The hardness is 3 to 4 and the specific gravity 2-27. The mean 

 of several analyses by Stromeyer yielded : B„0 3 [42-50], MgO 24 - 45, 

 H 2 32-85, Fe 0-15, CI 0-18, for which the formula MgB 2 6 4 + 3H„0 

 is calculated. — H. Staute in Ber. d. Chem. Ges., xvii, 1584, in 

 Jahrb. Min., 1885, i, 378. 



Avalite is a new chromium mineral from the quartzite of 

 mercury mines of Mt. Avala near Belgrade. The original mineral 

 was a green earthy substance, very impure, but finally for the 

 most part separated by chemical and mechanical means from the 

 admixed minerals. An analysis of the purest material, consisting 

 mostly of emerald green scales as seen under the microscope, 

 yielded : Si0 2 56-13, Ci\/) 3 14-59, A1 2 3 14-37, K 2 3-54, Fe 2 O s 1-10, 

 MgO 0*43, chromite 1-68, water (hygroscop.) 2*39, ignition 5-38=: 

 99'61. — Bosanitsch, ibid, 1885, ii, 409. 



Poltarsenite — Sarkikite. — These are described as two new 

 Swedisli arsenates of manganese; they may prove, however, to be 

 the same species. The former, polyarsenite, is stated by Igel- 

 strom (Bull. Soc. Min., viii, 370) to occur massive, without cleav- 

 age, with the hematostibiite of the same author (Bull. Soc. Min., 

 viii, 143), in veins in calcite imbedded in tephroite. It is yel- 

 lowish red, transparent. According to Bertrand it is optically 

 biaxial with a negative acute bisectrix. An analysis by Soder- 

 baum is given (I) below. The locality is the Sjo mines in Sweden- 



