A 
Atomic Volume of some Minerals. 231 
b. Var. Carinthine. Analysis by Clausbruch (Pogg., lviii, 168), corresponding to 
8 Si+144- 24 Ca +74 Mg+4 Fe. 
:% =461848 &. atomsof acid and bases, 23}. ¢. atoms of elements, 66}. 
B: 855°73 A. 10096°27—3°127 (sp. gr.) =3229 
Fe 180000 B, 3229—23}-—=-1884 C. 3229+663—=48-43 
¢ 96 
a. fren % 1009627 
c. Grammatite of Aker, Bonsdorff. The analysis gives 8:17 Si+217 Al+-3°6 Ca 
+86 Mg+0-6 Fe. As above, we take the analysis as it is, without attempting to 
reduce it to the limits of a formula. 
817 Si= 47166 6. atoms of acid and bases, 23°13, ¢. atoms of > ais 1. 
==3333 
217 Al 13997 A. 9888-42-95 (sp. gr 
36 Ca 12654 B, 33883+23-14—=144 C. 3838 ated 1==48-24 
86 Mg 2188 
a. At. weight, 9833-4 
TV. Scapolite, (Oa, Na)3 Si2+-21 Si— Meionite, Gas Si+-2A1 Si— Wernerite, 
das 8 Si+-3Al Si—Dipyre, 4(Oa, Na) Si+-341 Si. 
These several compounds crystallize alike. 
1. Scapolite. 
4 Si =2309-24 9%, atoms of acid and bases, 9. ¢. atoms of aia 82. 
2Al 12836 A. 4686°72—2°71 (sp. Lipari 
1Na 3909 B, 17294+9==1921 1729: jhe tiat 
20a 702-98 
a. At, weight, 4686°72 
2. Meionite. 
3 Si =1731-98 4. atoms of acid and bases, 8. ¢. atoms of elements, 28. 
2Al 12836 A. 4070+2°612 (sp. gr.) =155 
30a 105447 B. 15582+8==194'8 C. 1558:°2+28=55-65 
a, At. weight, 4070-00 
3. Wernerite—From Tunaberg and Ersby, as analysed by Walmstedt and Norden- 
skidld. 
4 Si =2309-24 8. atoms of acid and bases, 10. ¢. nem = elements, 37. 
8Al 1995-4 A. 5289°11+2°77 (sp. = =] 
30a 105447 B, 1909+10=1909 es: hae 6 
a. At. weight, 5289-11 
4. Dipyre, 
"Si —4041-:17 8. atoms of acid and bases, 14. ¢. atoms of elements, 51. 
8Al 1995-4 A. 7451°35-2°646 (sp. gr.) =2816 
2Na 7818 B, 2816+14=2011 O. 2816+51=55-21 
20a 702-98 
a. At, weight, 7451 
—(Oa, ~ee $i2+3418i. This scapolite-like mineral has A = 2133, 
B=1094; C=62. 
