b> 
Or 
He 
LIEVRITE IN NOVA SCOTIA—GILPIN. 
Nova Scotia. Ottawa, 
TroMsprotomide Syke eee tee 54,545 56.52 
Erongperomidel. 4 2h 08.2. p ee eee. 6.620 10.80 
NUeIe PACT 5. caved oy. aie cera ee 28.570 27.80 
Manganese. peroxide. .....5...0%)- 2.507 trace 
UL MMPIe LACIE - 2%. re be oi ere tes ee trace a 
GU INNS ocd Goise ont vale ae A noe 3.030 64 
Maonesiaie 1.6 hak eee perenne 1.100 2.59 
IMOIStUEG «2. o:S sty nc cm auminveetere nee 3.115 1.20 
Gar bomic ACiGs, Jenn ews neaee eee trace — 
99,487 99.55 
The specimen brought me was stated to have come from a bed 
a few inches thick on the south shore of Gabarus Bay. I do not 
know the exact locality ; consequently, some doubt may arise as 
to its proper geological age. Mr. Fletcher, of the Canadian 
Geological Survey, states in his Report of Progress, 1875-76, 
that this part of Gabarus Bay is occupied by felsites of Lauren- 
tian age, which is confirmatory of the age assigned to the 
mineral by Sir W. Logan. 
The description in the Geology of Canada is as follows: 
“Jt contains some black mica, and portions of red garnet, and 
forms a mineral of a velvet black colour, weathering rusty red, 
but having within a shining submetallic lustre. Its hardness is 
5.5, and specific gravity 4.15. Powder, yellowish ash-gray. 
Slightly translucent on the edge, and strongly magnetic. Brittle 
with an uneven fracture, and cleavage imperfect in two direc- 
tions oblique to one another. Before the blowpipe it intumesces 
and yields a black slag ; with hydrochloric acid it gelatinises. 
From its composition (given above) not less than its physical 
characters, this substance is regarded as a variety of Lievrite. 
It probably forms a bed in the Laurentian series, as a boulder of 
it, nearly a foot thick, was found near Ottawa, but the rock has 
not been observed in situ.” 
The analyses of this mineral from Elba, as given by Dana, all 
show the presence of 11 to 15 per cent. of Lime, which is pre- 
sent in small quantities only in that from Canada. And he 
