204 



in Uiese townships, occui- on lot 7, range 1, of VVakefiekl, in a band of 

 limestone. They are clove bi-own in color, somcitiraes measuring 

 two inches across. A little soutli of this locality, on the same lot, 

 crystals of a light cinnamon brown color are profusely ilisseminated 

 through a dark cleavable pyroxene. The latter rock is cut by quartz 

 also thickly studded with these crystals. A few hundred yards north- 

 east from the latter place lenticular patches of a crystalline titanite of 

 a dark brownish black color are enclosed in |>yroxeue. 



This mineral is also said, by Mr. Frank Adams, to occur in crystals 

 in a disintegrating dyke in Hull. 



Tourmaline. — This mineral, of a black color, may frequently bo 

 met with, either enclosed by or investing the rocks of the neighbox'- 

 hood. Black, lustrous crystals, variously modified, occur in a pinkish 

 calcite at Wilson's mine, ia Wakefield, and in ai)atite on the next lot 

 17, range 1. Large radiating and reticulating masses invest the sur- 

 faces of a syenite, on lot 18, range 2. The interstices formed by the 

 crossing of the prisms are occasionally filled with crystals of white 

 sea polite. 



The finest crystals of this mineral observed in this neighborhood 

 occur sparingly on lot 15, range 1 2, of Hull, investing a hard grey 

 pyroxenite. Tiiey are generally less than an inch in length, exceed- 

 ingly Vnight in lustre. Tlieir form is hexagonal, capped with planes of 

 the rhombohedron. This mineral has been observed at several p'aces in 

 Templeton. 



Having now reached the end of the anhydrous silicates, I will 

 briefly allude to hydrous compounds. 



Talc. — A mineral having the as|)ect of talc, occurs in small foliated 

 masses of a silky lustre, enclosing a nucleus of calcite at McLaurin's 

 mine in Templeton. 



Steatite. — A mineral of the nature of steatite has been observed in 

 seve»al yjlaces in the above townships, forming sun\ll bedded masses. 

 One of these is on lot 7, range 12. of Hull. On lot 7, range I, of 

 Wakefield, crystals of a yellowish steatite (pseudomorphs after pyrox- 

 ene) occur in a coai'se disintegrating cr3'stalline limestone. 



Herpentine. — This mineral is more confined to the limestone bands,, 

 through which it is distributed in grains, bands and lenticular masses. 



