PROFESSOR HEDDLE ON THE MINERALOGY OF SCOTLAND. 83 
On 1° 303 grammes— 
Loses 4 * 678 of water at 212°; insoluble silica, 2-727 per cent. 
From Igneous Rocks intruded among the Coal Measures. 
From Alumina, ° 004 
‘403 
Alumina, 
Ferric Oxide, . 
Ferrous Oxide, 
Manganous Oxide, . 
Lime, 
Magnesia, 
Water, 
30° 928 
15 * 323 
3° 162 
15° 309 
383 
1°375 
18° 649 
14°692 
99° 821 
5. About a mile east of the town of Elie, in Fifeshire, two vertical basalt 
dykes cut tufa. 
Small cavities in these dykes are filled with this mineral, which is associated 
with massive iserine, rarely olivine, and still more rarely fragments of pyrope. 
Its colour is dark green, it is very minutely scaly, and itis very soft. 
gravity is 2‘ 672. 
On 1-3 grammes— 
From Alumina, *008 
* 399 
Alumina, 
Ferric Oxide, . 
Ferrous Oxide, 
Manganous Oxide, . 
Lime, ‘ 
Magnesia, 
Potash, 
Soda, 
Water, 
Loses 3: 389 of water at 212°. 
30° 692 
Its specific 
There is every probability that this is the substance mentioned by Mac- 
CULLOCH, under the name of chloropheite, as occurring in Fife. 
It is to be observed of all these Delessites that they darken in colour after 
VOL, XXIX. PART I. 
Y 
