. Ontario Sessional Papers, 1914, Timiskaming series, exposed on the Dane^Larder lake Cong-lomerate of the Timiskamini; series. Half mile north of Qu-I lake, Lebel M. (P. II) 12 Bureau of Mines No. 4 POST-TIMISKAMING INTRUSIVESLamprophyre Dikes of lamprophyre are common in the Keewatin and Timiskaming. In theKeewatin the dikes are usually quite narrow, some of them being only ten or fifteenfeet wide. The cuttings along the railroad from Swastika to Boston creek reveal manylamprophyre dikes. Just east of Amikougami creek there is a mica-lamprophyre, quiteblack in color
. Ontario Sessional Papers, 1914, Timiskaming series, exposed on the Dane^Larder lake Cong-lomerate of the Timiskamini; series. Half mile north of Qu-I lake, Lebel M. (P. II) 12 Bureau of Mines No. 4 POST-TIMISKAMING INTRUSIVESLamprophyre Dikes of lamprophyre are common in the Keewatin and Timiskaming. In theKeewatin the dikes are usually quite narrow, some of them being only ten or fifteenfeet wide. The cuttings along the railroad from Swastika to Boston creek reveal manylamprophyre dikes. Just east of Amikougami creek there is a mica-lamprophyre, quiteblack in color. Immediately south of Boston creek bridge there is a reddish lampro-phyre (minette), which shows glistening biotite in hand specimens. Under the micro-scope biotite and hornblende are seen to be abundant. Chlorite, with needles of rutile,an alteration from the mica, is common. There are a few porphyritic feldspars, andmicrocline is abundant. Quartz in small grains is present. Sphene, apatite and mag-netite are accessory minerals. Lamprophyre intrudes the Timiskaming series in somevolume, as sho
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