238 DESCRIPTIVE CATALOGUE 
296. Basaltic rock—colour, purplish gray ; homogeneous; fracture, slightly irre- 
gular. 
297. Greenstone—highly crystalline ; contains a few flesh-coloured crystals of 
felspar; colour, very dark gray, with a bluish tint. Weathers with an iron-shot 
crust. 
298. From a vein traversing No. 294—contains small pebbles, calcareous spar, 
zeolites, and green earth. 
299. Metamorphosed siliceous shale—colour, greenish gray; some of the beds 
gritty. Contains organic impressions, like those found in the altered shales of 
Passabika River. 
300. Conglomerate—the paste containing calcareous spar and green earth. 
301. Basaltic trap—like No. 296. 
302. Metamorphosed siliceous shale—amygdaloidal in some places; in general, 
but little altered. 
303. Greenstone—like No. 297. 
304. Metamorphosed siliceous shale—colour, red; resembles, somewhat, the top 
rock of the “Great Palisades ;” has a jasperoid appearance. 
305. Hornblende rock—highly crystalline. 
306. Greenstone—finely crystalline ; contains many small crystals of red felspar; 
the hornblende predominates. 
307. Basaltic rock—colour, greenish gray; very fine-grained. 
308. Metamorphosed argillaceous shale—amygdaloidal; the cells few, and con- 
taining zeolites ; colour, gray, with a greenish tint; compact; irregular conchoidal 
fracture. 
309. Porphyry—the paste hornblendic, and filled with large crystals of felspar ; 
colour, dark gray; very crystalline; the felspar crystals tabular. 
310. Basaltic rock—colour, dark gray, almost black; resembles the dolerites, 
and may belong to that variety of greenstone. 
311, 312. Varieties of No. 309. 
313. Basaltic rock—colour, dark purplish gray; fracture, uneven. 
314. Basaltic rock—decomposing into an ochre; colour, red ; fracture, nodular ; 
amygdaloidal ; cells few, and filled with carbonate of lime and zeolites; very ferru- 
ginous. 
315. Volcanic grit—overlies No. 314; its material derived in part from that 
rock ; ferruginous ; incrustations of iron rust in the joints. 
316. Metamorphosed siliceous shale—colour, deep red; very fine-grained; con- 
tains organic impressions like those of No. 299. 
317. Metamorphosed argillo-siliceous shale—contains numerous horizontal black 
stripes; has a trappous appearance. 
318. Metamorphosed shaly sand-rock—resembles No. 317 en amygda- 
loidal; the cells being filled with thalite. 
319. Piderive: compact’; massive ; fine-grained ; colour, dark greenish gray. 
520. Basaltic rock—colour, dark chistes gray ; the joints contain chlorite and 
stilbite ; fine-grained ; homogeneous; fracture, irregular and uneven. 
