324 Scientific Intelligence. 



the more interesting known species of which full descriptions are 

 given, may be mentioned the following : Parisite, eudidymite, 

 epididymite, regirite, arfvedsonite, catapleiite, neptunite, elpidite. 



The new species described are nine in number. The descrip- 

 tions of these leave nothing to be desired in the way of fullness 

 and accuracy, but they can only be briefly characterized here. 



Cordylite is a barium-parisite. It occurs in minute hexagonal 

 crystals, club-like in form ; they are related in angle to parisite ; 

 hardness 4*5; fracture conchoidal; sp. gravity 4*31 ; color wax- 

 yellow. The composition is expressed by the formula Ce 2 F 2 BaC 3 9 . 



Ancylite occurs in minute orthorhombic crystals with strongly 

 curved faces. Color light yellow to orange or resin-brown ; 

 hardness 4*5; no cleavage; sp. gravity 3*95. In composition it 

 is a hydrated carbonate of cerium and strontium for which the 

 formula deduced is : 40e(OH)CO 3 + 3SrCO 3 + 3H 2 O. 



Spodiophyllite resembles a chlorite; it occurs in crystals 

 belonging to the rhombohedral system, combinations of the hexa- 

 gonal prism and base; cleavage basal, micaceous; hardness about 

 3 ; sp. gravity 2*633 ; color ash- to pearl-gray. In composition 

 it is a metasilicate related to segirite; formula (Fe,Al)„ (Mg,Fe, 

 Mn), (Na„K t ) 9 (SiO,) 8 . 



Tainiolite (T'Teniolite) is a kind of mica occurring in elon- 

 gated colorless crystals with sp. gravity = 2*86. An analysis by 

 Mauzelius on 0*1 gram gave: Si0 2 52-2, Al 2 O a 2-7, FeO 0-6, 

 MgO 19-1, K 2 11-5, Na 2 1-8, Li 2 3-8, loss 8-7 = 100. The 

 loss is referred to water (hydroxyl) and fluorine. 



Loeenzenite occurs in needle-like orthorhombic crystals, color- 

 less to violet or brown ; luster adamantine ; hardness 6 ; sp. 

 gravity 3-42. An analysis (by Mauzelius) gave Si0 2 34*26, Ti0 2 

 35*15, Zr0 2 11*92, Na„0 17*12, K a O 0*37, H 2 0*77 = 99*59. The 

 formula deduced is Na 2 (Ti,Zr) 2 Si 2 7 . 



Leucosphenite occurs in wedge-shaped monoclinic crystals; 

 color white inclining to grayish blue; luster vitreous, on some 

 faces pearly; hardness 6*5; sp. gravity 3*05. An analysis (Mau- 

 zelius) gave : Si0 2 56*94, Ti0 2 13*20, Zr0 2 3*50, BaO 13*75, Na 2 

 11*14, K 2 0*56, H 2 0*31 = 99*40. The formula deduced is 

 Na 4 Ba (TiO) 2 (Si 2 6 ) 5 . The mineral seems to be related to 

 eudidymite. 



Narsarsukite occurs in tabular tetragonal crystals ; color 

 honey-yellow to brownish gray; hardness a little above 7 ; sp. 

 gravity 2*751. An analysis (Christensen) gave : Si0 2 61*63, Ti0 2 

 14*00, Fe 2 3 6*30, A1 2 3 0*28, MnO 0*47, MgO 0*24, Na 2 16*12, 

 F 0*71, H 2 0*29 — 100*04. 



Chalcolamprite occurs in small regular octahedrons, resem- 

 bling pyrochlore ; color dark grayish brown inclining to red ; 

 hardness 5*5; sp. gravity 3*77. An analysis (Mauzelius) gave: 

 Nb„0 6 59*65, Si0 2 10*86, Ti0 2 0*52, Zr0 3 5*71, Ce 2 3 (etc) 3*41, 

 Fe 2 O s 1*87, MnO 0*44, CaO 9*08, K 2 0*38, Na 2 3*99, H 2 1*79, 

 F 5*06= 102*76 (deduct O) = 100*63. It is regarded as consist- 

 ing of equal amounts of RNb 2 6 F 2 and RSi0 3 . 



