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often banded or zoned with lighter or daiker tints. This mineral, like 

 the Agate, seems to offer iacilities for the introduction of the skill 

 of the artificer, as the manufactured articles citen seen are not of 

 natural hue, but are brought to that state of perfection by subjecting 

 them to a certain degree of heat before polishing. 



Crystals of this mineral are often found of large size and lichly 

 coloured, and have -been em] loved in making rings, stones, etc., kno\vn 

 in the trade as False Amethyst, Fahe Emerald, False Ruby, False 

 Topaz, etc., according to the colour. This mineral is much too scft for 

 any purposes of jewellery. 



At Lake Superior large cubical crystals of a dingy green colour are 

 often found associated with Amethyst. Emerald green and purpl 

 cleavable varieties are often met with in the brecciattd veins that 

 are now bemg worked for Silver in the Port Arthur district In 

 the Township of Ross, in Ontario, a beautiful purplish-red granular 

 varie'^y occurs, with a more compact semi-transparent whitish fluor. In 

 the Township of Hull a single crystal of semi-transparent green colour, 

 and which must have been four cubic inches, was found by a farmer in 

 developing an Apatite deposit, who, being of a liberal disposition, broke 

 up the crystal to give pieces of it to his friends, thereby robbing 

 the scientific world of one of the finest crystals ever found in Canada. 



A portion of this crystal is in the Geological Museum. 



Several other localities in this and the neighbouring Townships 

 afford this mineral. 



Aragofute, Satin Spar and Alabaster, are minerals used to a large 

 extent abroad for making fancy ornaments, and as the two latter are 

 often represented by various minerals, it may be as well to point out 

 their difference. 



Satin Spar, or fibrous limestone, is found largely in the coal 

 formations of Cumberland and Derbyshire ; it is also found in 

 Hungary, United States and Canada. I have seen several specimens 

 from the Lake Superior district that would cut into beads and other 

 ornaments. Beads of this mineral were, some years ago, in great 

 favour in England, but owing to the introduction of an imitation, made 

 from hollow glass globes, filled with fish scales, which very nearly 

 resembled the originals, they have of late years gone out of fashion. 



