All the miners are agreed in the statement that the gold abounds most at the swells, or highest points of the waves of rock, and that the scarcely less valuable mispickel appears to follow the same law.    From Wordnik.com.  [The Atlantic Monthly, Volume 13, No. 79, May, 1864] Reference

The underlying slate is filled with bunches of mispickel, not distributed in a sheet, or in any particular order, so far as yet observed, but developed throughout the slate, and varying in size from that of small nuts to many pounds in weight, masses of over fifty pounds having been frequently taken out.    From Wordnik.com.  [The Atlantic Monthly, Volume 13, No. 79, May, 1864] Reference

A sample of mispickel contains 7 per cent. cobalt.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

Iron is found combined with sulphur in pyrrhotine and pyrites, and together with arsenic in mispickel.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

The sulphides most commonly present, in addition to the sulphurized minerals of silver, are pyrites, galena, blende, and mispickel.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

The mispickel and copper and iron pyrites are converted into oxides by roasting, and are in great part removed by a subsequent washing.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

The sulphur and arsenic of such minerals as mispickel and pyrites are oxidised by the hot air and pass off as sulphur dioxide and "white arsenic.".    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

Sulphur in blende, 375 in burnt ore, 377 in chalcocite, 376 in coal, 419 in copper, 207 in copper pyrites, 376 in mispickel, 376 in pyrites, 370, 376.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

One gram of copper pyrites, blende, fahlerz, or mispickel, yields 7 or 8 grams of lead, whilst 1 gram of antimonite will give 6, and 1 gram of galena only.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

~ -- In assaying ores containing a large proportion of pyrites or mispickel, or both, the best plan is to take a portion and calcine so as to convert it into a product of the kind just considered.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference

Arsenic, 381 detection of, 381 dry assay for, 382 gravimetric assay, 383 in brimstone, 393 in crude arsenic, 388, 393 in mispickel, 125, 392 iodine, assay for, 386 separation by distilling, 384 uranium acetate, assay for, 389.    From Wordnik.com.  [A Text-book of Assaying: For the Use of Those Connected with Mines.] Reference