623 



SCOTLAND. 



Statistics. 

 Mineral- 



Treraolite. 



Heliotrope. 



Diallage. 



TREMOLITE. 



In large crystals openly entangled and independent. 

 In Tirey ; from primary limestone. 



In large crystals imbedded. In Glen Tilt. 



Large Jibrous, radiated or straight. In Glen Tilt. 

 Of very large dimensions. 



Flat bladed, radiated. In Cairn Lia (Ben Gloe), in 

 Unst (Shetland.) 



Finejibrous, radiated or straight, In Glen Tilt, at 

 Portsoy, in serpentine ; at Dunkeld, in clay-slate. 



Fibrous, asbestiform or silky. In white primary lime- 

 stone. In Glen Elg. 



Small stellated, imbedded. In Glen Tilt. 



In imbedded and radiated spheres. In Glen Tilt. 



In short^fibrous crystals, compacted into a solid mass. 

 In Glen Tilt. This variety sometimes appears to be 

 almost granular. The specimens of treiuolite, in this 

 locality, all occur in primary limestone, and are very 

 splendid ; and most of the several varieties here named 

 are so rare that I have seen no parallel to them in 

 foreign collections. It is remarkable, that in Tirey, 

 crystals of tremolite and of Sahlite are so confounded, 

 that a single crystal sometimes contains both substances, 

 as if there was a transition between the two minerals. 



HELIOTROPE. 



Chalcedony, coloured by green earth. In Scuir-more 

 in Rum. In nodules, in the trap conglomerates of 

 Kerrera. In the hill of Kinnoul ; in Ayrshire ; in 

 Mull, under Gribon. On the beach at St. Andrews, 

 loose. 



DIALLAGE. 



In Unst and Fetlar, in serpentine and in diallage 

 rock. In Balta, in diallage rock. In Ayrshire, in ser- 

 pentine. 



The 



STAUROTIDE. 



Staurotide. In Bixeter Voe, Shetland, in micaceous schist, 

 crystals here are as large as those of Britanny. 



HOLLLOW SPAR. 



Hollow , In micaceous schist near Balahulish. This mineral 

 P r - occurs abundantly in Skiddaw, in clay-slate, as is well 



known ; but I have never found it in Scotland, except 



in the above-mentioned place. 



APATITE. 



In the .greenstone near the southern extremity of 

 Salisbury Crags, near Edinburgh. In Ross-shire, near 

 Bonar Bridge, in gneiss and granite. In trap, (clay- 

 Stone) in Hum. 



HYPERSTHENE. 



In Sky, and in Ardnamurchan, in hypersthene rock. 

 In Rum, in veins in augite rock. It appears also to 

 have been found loose in Banffshire ; but its native 

 place has not even been conjectured. 



STAUROLITE. 



Staurolite. At Strontian, in a granite and metalliferous vein. In 

 the Kilpatrick hills, in trap. It is not crossed or twin- 

 ed in either of these places ; but the crystals are of 

 great magnitude. 



Apatite. 



Hypers- 

 thene. 



FINITE. 



Finite. 



Iji Ben Gloe and % in Forfarshire, in porphyritic veins. 

 In Argyllshire, in massive porphyry. In these cases 



6 



it forms an abundant ingredient in the rock, and ha? Statistics. 



been mistaken for mica. X TTT V T' 



Mineral- 



SPODTJMENE, 



In Glen Elg, in granite. In this case it is an in- Spodu- 

 gredient of the rock, generally diffused with the fel- raene - 

 spar, mica, and quartz. 



CYANITE. 



In Shetland, at Hillswick, and in the southern pro- Cyanite. 

 montory of Mainland, in mica slate. In Glen Tilt, in 

 quartz. At Boharm in Banffshire, in clay slate. This 

 last is the locality where the mineral was first found ; 

 whence it was sent to Saussure, and by him named 

 Sappare, a term corrupted from Sapphire by the per- 

 son who transmitted it. 



GARNET PRECIOUS. 



At Strontian and in Ardgower, in granite and gneiss. Garnet pre. 

 In Harris, in gneiss. At Ely in Fife, loose. That of cious - 

 Strontian resembles the Hungarian in colour. That of 

 Harris resembles the Greenland and the Indian gar- 

 nets. 



TOPAZ. 



Blue, white, and brown. In decomposed granite in Topaz. 

 Braemar, loose. Single crystals weighing fifteen ounces 

 have been found. A fragment in my possession be- 

 longs to a crystal which must have weighed eight 

 pounds when entire. The blue and brown are some- 

 times united in one crystal. 



BERYL. 



In the same situations and place. The topaz is Beryl, 

 tolerably abundant ; but this is rare, and the crystals 

 imperfect generally, as if carious or corroded. 



CHLORITE CRYSTALLIZED. 



In Cairn Lia, in micaceous schist. In Jura, in chlo. Chlorite 

 rite schist. In Bute. At Dunkeld. The crystals of crystalli- 

 Cairn Lia are very large and perfect, being compound- zed- 

 ed hexagonal prisms terminated by pyramids. 



FLUOR SPAR. 



In Sutherland and Aberdeenshire, in gneiss and Fluor spar, 

 granite. That of Sutherland is purple. That of Aber- 

 deenshire is most commonly green and white, and the 

 green colour is discharged by exposure to air. At 

 Strontian, in a granite and metalliferous vein. In 

 Ayrshire, and in Papa Stour in Shetland, in claystone 

 amygdaloid. This last situation is very rare. 



CHLOROPH^EITE. 



In Rum, in claystone and basalt; and near Burnt- Chlorophw- 

 island in Fife. I found this mineral first in 1810. It ite - 

 varies in lustre in these two localities, the former being 

 transparent when first found. 



CONITE. 



In Glen Farg, in Mull, in Sky, and in the Kilpatrick Conite. 

 Hills, in amygdaloidal trap. These are the only places 

 in which I have yet observed this new mineral. 



PREHNITE. 



In gneiss, in Yell, Shetland. In traps in the follow- Prehnite. 

 ing situations. At Bishoptown, near Paisley. In the 

 Kilpatrick Hills. In Glen Farg. In Mull, Sky, Ar- 



