MINERALOGY. 307 



Pkiladelphife. — A miueral foiuul in a decoinijosing liornblondic gneiss 

 on Germantown Avenue, Philadelpliia. In comi)Osition and properties 

 related to verniiculite. A pearly niicaceous mineral, wliicli exfoliates 

 when heated to ten times its original volume. Described by lleury (J. 

 Lewis, of Philadelpliia. 



PJiospJniranylite. — A pulverulent incrustation found on quartz and feld- 

 spar, of a pearly luster, and lemon-yellow color, and determined by 

 F. A. Geuth to be a hydrous uranium i)hosphate. 



Picite. — A hydrous iron phospUate which like the Elenorite, before 

 mentioned, is found in a mine near Giessen. It is amorphous dark 

 brown translucent, and has a fatty luster. It occurs in little stalac- 

 tites, and spherical concretions, or in coats on other minerals. 



Plagiocitrite Klinophmte and Wattevillite, are some hydrous sulphates 

 found by S. Singer on the Bauersberg near Bischofsheim, on the 

 Rhone. They resulted from reactions between the decomposing ])yrites 

 in some lignite beds, and an underlying basalt, or the tuff mixed with 

 the lignite. They remain to be further investigated. 



Pseudonatrolite. — A new zeolite described by Grattarola from San Piero 

 in Campo. It is found in minute colorless crystals with a glassy 

 l)early luster, and probably orthorhombic in crystallization. It is a 

 calcium aluminum silicate, and named from its relation to natrolite. 



Bandite. — A lemon-yellow incrustation found on granite and deteruiined 

 to be a calcium uranium carbonate, near liebigite in composition. 

 Named for T. D. Eaud of Philadelphia by G. A. Koenig. 



Reinite. — A pure iron tungstate, discovered by Professor llein in Kim- 

 bosan, Japan, and investigated by K. von Fritsch and Luedecke. It 

 is a black-brown opaque substance; found in large square crystals 

 assumed by analogy to be monoclinic. 



Thaumasite. — A white translucent mineral, from Aareskutan, described 

 by G. Lindstrom, with fatty glance, and choncoidal fracture. It is 

 an hydrous lime carbonate, sulphate, and silicate. One would think 

 it a mixture, but several analyses exactly agree, and Tornebohm, a 

 careful analyst, is assured that it is no mixture. One will remember 

 cancrinite, which is a silicate and carbonate. This miueral is justly 

 named from {^autj.a'^u)^ to wonder. 



Titanomorpliite. — The gray translucent substance which is so very fre- 

 quently found in microscopic sections of rocks as a decomposition prod- 

 uct of titanic iron and rutile, has been the subject of much discussion. 

 It has never been found practical to separate it and analyze it, hence 

 its composition has always been a subject of si^eculation ; von Lasaulx 

 found masses in an amphibolite, from Hohe Eule, of sufficient size to 

 analyze. He fixed its composition as a calcium titauate, identical 

 with perowskite. The substance previously had two or three names, 

 and was best known as leucoxene, a name given by Giimbel. It was 

 scarcely necessary to give it another. 



