Notice of the Ancram Lead Mine. 249 
as rich as any inthe U. States. Its fracture presents broad 
lamine, which on breaking fall into cubes. It likewise 
occurs granular, sometimes resembling micaceous oxid of 
Iron. In contains imbedded an abundance of clear perfect 
quartz crystals, which by carefully breaking the ore can 
be detached entire. In addition to the Galena® the follow- 
ing minerals occur :— 
1. Molybdate of Lead ? Occurs in small tabular crystals 
of a pale orange yellow color, and distinctly foliated. 
They are translucent and have a glistening lustre—yield 
easily to the knife, and melt before the blow pipe into a 
dark colored mass—rare. 
2. Sulphate of Barytes, in veins of considerable thickness 
in the argillite and limestone. ‘Three varieties, the con- 
creted, granular and compact. In some places it forms a 
gangue for the Galena. 
3. Sulphuret of Zinc. The brown variety is most abun- 
dant—the yellow not uncommon. Lustre highly splendent 
and metallic—generally associated with quartz. 
A. Pyritous Copper. Abundant, of a brass yellow color, 
and often richly tarnished exhibiting a handsome play of 
colors, connected with the blende. It is mostly massive, 
sometimes in small regular crystals. It is sometimes of a 
bluish color, and would then undoubtedly come under 
that species, called béack copper by Jameson. 
5. Green carbonate of Copper. Compact malachite is 
common associated with the galena. Itis of a beautiful 
green color, and extensively tinges the quartz connected 
with it. 
6. Quartz. Perfect six sided crystals are contained in 
the galena. They are very abundant, sometimes with 
flattened sides, and their situation evidently shows that the 
lead was deposited round them, often in small geodes. _ 
Radiated Quartz. Associated with copper, blende and 
galena. 
Milky Quartz. This variety includes much of the 
* From the appearances I should judge that the vein was of considerable 
extent. ’Tis true that several attempts to discover the ore proved unsuc- 
cessful; but they were made at a considerable distance from the direction 
ofthe vein, and in one instance at nearly a right angle with it. Should it 
again be explored, a drift from the adjacent valley would much facilitate 
the operations, and nothing would be lost in the end on the score of economy, 
Vor. VIIE.—No. 2. 32 
