173 
TAB. CCLUXXXVIII. 
MOLYBDENUM  sulphureum. 
Sulphuret of Molybdenum. 
Class 3. Metals. Order 1. Homogeneous. 
Gen. Molybdenum. Spec. Sulphuret. 
Gen. Cuar. Spec. Grav. 7°400. Nearly infusible. 
Colour yellowish white. Capable of being formed 
into an acid. | 
Spec. CHAR. Molybdenum combined with Sulphur. 
Syn. Molybdéne sulphuré. Hauy, 4. 289. 
Molybdéne. De Lisle, 3. 4. note 3. 
- Molybdéne sulphuré; Sulfure de lee an 
De Born, 2. 119. 
Warsserblel. Lmmerl. 2. 541. 
Molybdenite mineralized by Sulphur. Azrw. 2. 
322 
ad ad O 
‘Tuts ore is said to have been found in Scotland. The 
specimens here figured are, the upper one, from near Me- 
nabilly in Cornwall, and the lower one, from Coldbeck in 
Cumberland, and are now first published as discovered in 
these latter places. Mr. Sheffield first told me of its being 
found in Cornwall; and Mr. P. Rashleigh was so good as 
to procure me a specimen about a twelvemonth since; and 
about the same time I had some specimens of rocks from 
Kendal, among which was the one figured at the bottom of 
the plate. The first is lodged in small detached parcels 
very sparingly in largely plated Chlorite or Talc, among 
