i ANALYSES. ’ 95 

ANALYSES. 
3. (61.) GRANITE.—The white and bluish felspars represent respectively orthoc!: 
the latter showing faint strix. These’are associated with common plasm Gaara ase: 
uartz, 
The analysis is of the mass, as the felspars could not be separated from each other. 
_ 2. (99.) Eurrric Rock.—Consists of two felspars intermingled with quartz 
that a separate analysis of the felspars could not be made. One of them is str: 
analysis shows it to be oligoclase, In some portions of the specime: x Pi striated ; the 
found (vide No. 100), which would bring the rock into the class designated ChE a uae 
- Rose as 
so thoroughly mixed 
granitite, and by Fournet as miarolite. i 
3. (13.) FELSPAR PorruyRY.—The crystals rendering the mass porphyri 
oligoclase and glassy non-striated orthoclase. The EOE of the aa 
exactly the composition of oligoclase. Whether the small black specks 
occasionally contains are hornblende or schorl, which they most resem 
determined, on account of their small quantity. 
4. (49.) SERPENTINE.—The analysis of the mass clearly proves the rock 
resembling the serpentine from the Radau Valley in the Harta RAE en ne, Closely 
\ showing that the rock has a tendency to turn into schiller-spar, has al: s it he fracture.. 
x and its association with chrysotile. J So Its blaci 
5. (64.) GREENSTONE (Diabase).—The analysis of the soluble and inse’ isg portions of this rock are 
; given on page 17 of the Catalogue. The analvet- + iiss also tends to prove the com- 
position of the rock. From the appearance of the specimens of the rock it could not be 
clearly ascertained whether the greenish-black mineral associated with the felspathic 
component was augite or hornblende. The analysis of the soluble portion proves it to be 
) labradorite; and as this species of felspar is always associated with augite, the rock 
6 
yellow striated 
rix gives almost 
which the rock 
ble, could not be 
should be called diabase. ‘The greenish element of the mass is probably chlorite. 
. (67.) FELSPAR FROM Diorire.—The portion taken was perfectly separated from all matrix, and 
the analysis shows it to be albite. 
7. (70a, 70b.) Errosrre.—The rock consists of quartz, epidote, and hornblende. The analysis 70a 
j igs of the rock with the hornblende separated, and resembles that given by Dr. Hunt of 
ah the epidosite of Canada. 70b was another portion, containing less free quartz ; it had a 
specific gravity of from 3'21 to 3:26, and taking the specific gravity of epidote as 3-4, 
19 per cent. of the silica may be deducted as quartz, which will leave Si0,4 1—Al p 0,25 
aN, O 3 19—Ca0 15, which is the composition of an iron epidote. 
8, (50.) OLDER BASALTIC CLAY.—Color light brown ; 59 per cent. soluble in hydrochloric acid. The 
analysis is of the soluble portion. 
9. (51.) AMYGDALOIDAL Basarrıc Cray.—A specimen closely resembling No. 51 gave the analysis ; 
i 59 per cent. was soluble in hydrochloric acid. 
10. (56.) Rep BASALTIC CLAY.—The analysis is from a specimen closely resembling No. 56; 58 per 
cent. was soluble in hydrochloric acid. The analysis is of the soluble portion. 
l 11. (60a-b.) The analysis is from a nodule which closely resembled the interior portions of No. 60; 
' 49 per cent. was soluble in hydrochloric acid. 60a is the soluble portion, 60b the 
insoluble. 
A. (6.) Newer BAsatric.—Basalt (a) is the soluble portion, which is 24 per cent. of the whole ; 
À (b) is the insoluble. ; 
13. (30.) Meramorruic Rock.—Color black, structure semi-crystalline ; closely resembling ordinary 
hornfels in appearance and composition. ` z 
14. (18.) Staty SHALE (Mudstone).—Soft, free from grits; easily fused before the blowpipe. 
15. (7.) Wurre-anp-YELLow Sanpstone.—Formed of white transparent quartz grains, cemented 
together by a white or yellow paste. 
16. (10.) Fine Micaceous SHALY SANpSToNE.—Easily cleaved. 
t 
_For other analyses of the Newer Volcanic, vide pages 23 and 28 of the Catalogue, 

