﻿Miscellaneous 
  Scientific 
  Intelligence. 
  453 
  

  

  837, 
  1919] 
  Amer. 
  Min., 
  4, 
  15, 
  1919. 
  Lamellar 
  structure. 
  Perfect 
  

   cleavage. 
  H. 
  = 
  1-5. 
  G. 
  = 
  7-6. 
  Metallic 
  luster. 
  Color, 
  steel- 
  

   gray. 
  Fusible. 
  Comp. 
  — 
  Bi 
  s 
  TeS 
  4 
  . 
  From 
  Serrauia 
  de 
  Ronda, 
  

   Spain. 
  

  

  Pyrobelonite. 
  G. 
  Flink. 
  Geol. 
  For. 
  Forh., 
  41, 
  433, 
  1919. 
  

   Orthorhombic. 
  a:b:c 
  = 
  0-80402 
  :1 
  : 
  0-65091. 
  In 
  very 
  slender 
  

   needle-like 
  crystals 
  showing, 
  a 
  (100), 
  m(110), 
  n(120), 
  e(201), 
  

   c(001), 
  d(011), 
  f(031), 
  p(lll) 
  and 
  o(221). 
  Color, 
  fire-red. 
  

   Powder, 
  orange-yellow 
  or 
  reddish. 
  Elongation 
  positive. 
  Prob- 
  

   able 
  optical 
  orientation; 
  Opt. 
  — 
  ; 
  Ax. 
  pi. 
  | 
  c(001) 
  ; 
  Bx 
  ac 
  

   !| 
  a 
  axis. 
  Indices 
  high. 
  H. 
  — 
  3-5. 
  G. 
  = 
  5-377. 
  Comp.— 
  A 
  

   hydrous 
  lead-manganese 
  vanadate, 
  4PbO-7MnO-2V 
  2 
  5 
  -3H 
  2 
  0. 
  

   Apparently 
  related 
  to 
  descloizite. 
  Found 
  associated 
  with 
  haus- 
  

   mannite, 
  barite, 
  and 
  calcite 
  at 
  Langbanshyttan, 
  Sweden. 
  

   Named 
  from 
  irvp, 
  fire 
  and 
  (3e\ovr/, 
  needle, 
  in 
  allusion 
  to 
  its 
  acicular 
  

   crystals 
  and 
  red 
  color. 
  

  

  Sobralite. 
  John 
  Palmgren, 
  [Bull. 
  Geol. 
  Inst. 
  Univ. 
  Upsala, 
  

   14, 
  109-278, 
  1917], 
  Chem. 
  Abs., 
  13, 
  1198, 
  1919. 
  A 
  triclinic 
  

   variety 
  of 
  pyroxene 
  found 
  in 
  a 
  eulvsite 
  rock 
  from 
  Soderman- 
  

   land, 
  Sweden. 
  Optically 
  +. 
  Z 
  • 
  c 
  = 
  48% 
  Y 
  : 
  c 
  = 
  551°, 
  

   X 
  : 
  c 
  = 
  62-2°. 
  Colorless. 
  Named 
  after 
  Professor 
  J. 
  M. 
  Sobral. 
  

  

  Sphenomanganite. 
  G. 
  Flink. 
  Geol. 
  For. 
  Forh., 
  41, 
  329, 
  

   1919. 
  A 
  variety 
  of 
  manganite 
  which 
  shows 
  sphenoidal 
  crystal 
  

   forms 
  from 
  Langbanshyttan, 
  Sweden. 
  

  

  Villamaninite. 
  W. 
  R. 
  Scghoeller 
  and 
  A. 
  R. 
  Powell. 
  Min. 
  

   Mag., 
  19, 
  14, 
  1920. 
  Isometric, 
  In 
  irregular 
  groups 
  of 
  rough 
  

   crystals 
  showing 
  cube 
  and 
  octahedron 
  and 
  in 
  small 
  radiating 
  

   nodular 
  masses. 
  H. 
  — 
  4-5. 
  G. 
  = 
  4-4-4-5. 
  Color, 
  iron-black. 
  

   A 
  disulphide, 
  RS 
  2 
  , 
  with 
  R 
  = 
  Cu 
  and 
  Ni, 
  with 
  smaller 
  amounts 
  

   of 
  Co 
  and 
  Fe. 
  A 
  little 
  selenium 
  replacing 
  sulphur 
  was 
  noted. 
  

   Probably 
  a 
  member 
  of 
  the 
  Pyrite 
  Group. 
  Comp. 
  — 
  Cu, 
  19 
  ; 
  Ni, 
  

   18; 
  Co, 
  7; 
  Fe, 
  4; 
  S, 
  50; 
  Se, 
  1-5. 
  Occurs 
  disseminated 
  in 
  crys- 
  

   talline 
  dolomite 
  from 
  Carmenes 
  district 
  near 
  Villamanin, 
  Prov. 
  

   Leon, 
  Spain. 
  

  

  III. 
  Miscellaneous 
  Scientific 
  Intelligence, 
  

  

  1. 
  National 
  Academy 
  of 
  Sciences. 
  — 
  At 
  the 
  recent 
  meeting 
  of 
  

   the 
  National 
  Academy, 
  fifteen 
  new 
  members 
  were 
  elected, 
  as 
  

   follows 
  : 
  William 
  Duane, 
  Harvard 
  University, 
  physicist 
  ; 
  Dr. 
  

   James 
  Rowland 
  Angell, 
  psychologist 
  and 
  recently 
  elected 
  Presi- 
  

   dent 
  of 
  the 
  Carnegie 
  Corporation 
  ; 
  Wilder 
  Dwight 
  Bancroft, 
  

   Cornell 
  University, 
  chemist; 
  Dr. 
  Bailey 
  Willis, 
  Leland 
  Stanford 
  

   University, 
  geologist; 
  Joel 
  Stebbins, 
  University 
  of 
  Illinois, 
  

   astronomer; 
  Hans 
  F. 
  Blichfeldt, 
  Leland 
  Stanford 
  University, 
  

   mathematician 
  ; 
  Henry 
  Prentis 
  Armsby, 
  Pennsylvania 
  State 
  Col- 
  

   lege, 
  chemist 
  ; 
  A. 
  J. 
  Carlson, 
  University 
  of 
  Chicago, 
  physiologist 
  ; 
  

  

  