414 Fifth Supplement to Dana’s Mineralogy. 
Rensselaerite.—T.S. Hunt obtained on analysis for the Rensselaerite of Grenville, 
Canada, and also for crystals from Canton, N- ¥. (Logan’s Rep. 1857, p 454): 
ads ‘60 Mg it 06 Fe 1-53 ag hoon 99°79 
61°10 31°63 1°62 5-60 ==100°05 
Its c compo ° that 7” ey inc 2: he 3:0. G.==2-757. ‘Texture granular. Color 
greenish-white ale nslucent. Powdered mineral soapy in feel. 
[The crys ais according ra Beck, hve the a of pyroxene, pe which species, 
according to him, they are pseu s.— 
A ye ellowish white mah nine ni son ial ‘resembling De ag fills fissur 
in the preete of Drona which afforded Hunt, Si4 ep (by diff.) 38° 05, 
Fe 1-83, loss by ignition 13:96. It takes a waxy lustre ib dy the 
Taxtatite [p. 351, and III, IV].--The ag te of Skogbile in Kimito and Har- 
kasaari in Tamela has been studied by A. E. Nordenskidld (Pogg., ci, yon Po 
shown to belong to two species. The Tam ela tantalite is that wlilch has fig- 
ured [see Min., p. ack and 9 which the name tantalite is retained, It was as calla 
Skogbdlite by A Nordenskidld. It occurs both near Hirkiisaari in Tamela a 
Skogbéle in Kimito. os is submetallic, corse _ a psnecagt o to cinnamon- 
brown powder. H=6—6-5. G.=78 e specim 
Composition ssconing to E. Ai Nordenskisid 0 fas pees en ‘trot Skogbile, rs 
ci acid 84-44, oxyd of tin 1: 26, oxyd of copper 014, Fe 13-41, Mn 0:96, Ca 0-15 
ine lius obtained for a Tantalite with “cinnamon-brown powder” [No. 2 in Min.], 
Ta 85-85, Sn 0-80, Fe 12-97, Mn 1-61, lime 0-56, silica 0-72==102 51; G.=7-655 
(Afh. i i Fys., etc, iv, 266, ed vi, 237). 
e other species (the Kimito-Tantalite of N. Nordenskiéld) is named Txtoure. 
t has been found only i at Kimito n near Skogbéle. ea Prcningec nc trimetric, Jen usu- 
ally in rectangu _ prisms, in which O, i-%, 4-7, are prominent planes. J: J=122" 19 
13=128° 45’, O:8-2==104° 58:6’, O: I=111° 99’, 1: 111262 189", 1: 
: . @ j 
position parallel to 4-7 H=6--65. Specific gravity 7~-7°25, mostly 705—T1. 
3 
ao % u a mixture of the wo vata xi 
The Feritesl a axis in Tantalite is cin that 3 “Columbite as 4:3. Jxiolite appro: 
mates in form to Tantalite if its shorter lateral axis be increased one-half. 
Trrraneprrre [p. 82, and I, II]. ee of the ore (1) from Clausthal, pro 
an easberg, by U. Kuhlemann (Zeits. f. d. g. Nat., viii, 500, Lieb. u. Kopp, P 
s Sb As A Cc Fe Zn 
i. 9564. 2764 4 -——~ 818 8459 6-23 sate 
2. 2522 27338 O67 1158 8718 394 500= . 
Tvxaqvors [p. 405] —W. P. Blake refers to this species ah 
fii ts the Ais ent Mexicans as Chalchihuitl (Am. J Sa (o1 eb ag "te ane 
from the mountains rep Los Cerillos, ont of Santa Fé, where it ee pe H 
ondthins in nests. H.=nearly 6. G=2:426—2651. Trials by ‘J. M. Blake 
t in its constitution it was related to Pingcia 
il. 
IGITE, Heddle-—This name has been ER ty ad re (New i 
J., [2], iv, 162) for a supposed new mineral from n . ee 
"oH 
am 
- 
. 2 nad realy ‘and Pail to an opaque 
giving a strong soda reaction. Analysis afforded— 
Al Oa % i . 
45-98 21:93 16-15 47 112 
