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Updated: June 13, 2025
I have a specimen of steatetical whinstone or basaltes from some part of Cumberland, in which is contained many nodules of the most perfect and beautiful plumbago. It is dispersed through this stone in rounded masses of all sizes from a nut to a pin's head; and many of these are mixed with pyrites. There is therefore reason to believe that this plumbago had been in fusion.
In his fortnight's travel through the New Dixie plumbago was the only mineral on which he had not heard the story based. A military horseman overtook the carriage and slackened to a fox-trot at Garnet's side. "Captain Champion, let me make you acquainted with Mr. Fair. Mr. Fair and his father have put money into our New Dixie, and he's just going around to see where he can put in more.
Twines of all sizes, inks, waxes, cork, tar, resin, pitch, turpentine, asphalt, plumbago, glass in sheets and tubes; and a host of miscellaneous articles revealed on looking around the shelves, as well as an interminable collection of chemicals, including acids, alkalies, salts, reagents, every conceivable essential oil and all the thinkable extracts.
Coffee, sugar-cane and cotton have been grown with profit in the northern parts of the State. Also the undeveloped mineral wealth of the country is very great. Its known minerals are gold, copper, lead, cobalt, iron, coal, tin and plumbago: copper and iron having long been worked by the natives.
At Worcester, in the State of Massachusetts, 45 miles due west of Boston, a bed of plumbago and impure anthracite occurs, interstratified with mica-schist. It is about two feet in thickness, and has been made use of both as fuel, and in the manufacture of lead pencils.
The deep ravine running beside the house he had planted with blue hydrangeas throughout its length; when these are in flower, interspersed with scarlet and orange cannas, they form the most glorious mass of colour imaginable, as do the hedges of pink and white oleanders in the garden, each one with its smaller, attendant clipped hedge of pale-blue plumbago.
This series, about 20,000 feet in thickness, is, as before stated, unconformable to that last mentioned; it consists in great part of gneiss of a reddish tint with orthoclase feldspar. Beds of nearly pure quartz, from 400 to 600 feet thick, occur in some places. Hornblendic and micaceous schists are often interstratified, and beds of limestone, usually crystalline. Beds of plumbago also occur.
She was now handling this inoffensive object in such a way as to justify the fancy that, had it been charged with a deadly poison in its point, instead of with a bit of plumbago of the HH quality, she would have driven it into Freeman's heart then and there.
If a quantity of mixed fragments of glass and plumbago be pounded together in a mortar with only a moderate degree of pressure, so as to avoid, as far as possible, the breaking of the glass, there will soon come a stage at which the softer material can be separated from the harder simply by means of a fine sieve.
"It has been worked at intervals for upwards of two centuries; but, being now less productive, the ore has been excavated for several years consecutively. This is the only mine of the kind in England, and there are one or two places in Scotland where plumbago has been discovered, but the lead obtained there is of an inferior quality.
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