p; A r t III. Of Antimony, Mercury^ &c. 
The PENT AGON ATE Marchafite. About the bignefs 
of a little Gall 3 fomewhat round, defined with feveral fides, 
each with five Angles. 
A Tuberated Marchafite with a Green Spar. 
A MARCHASITE growing to its own Spar, together 
with a white one pointed and femiperfpicuous. 
A Mixed MARCHASITE. It confifteth of yellow pieces 
partly cubick, and partly flaked : with Lead-Ore holding 
Silver growing to it on one fide 5 on the other, feveral fets 
of aih-colour d Flakes growing together in the form of little 
Rofes. 
As all Metals, fo Marchafites have their SPARS, called 
Fluores. Both becaufe they melt in the fire 3 and make the 
Ores to which they belong, to melt the better. The rea- 
son whereof is, For that in all Spars, there is a certain Salt 
which lies more loofe and open, and which in mixing with 
the Ore, frets and tears it all to pieces. 
A Piece of WHITE MUNDICK. 
WHITE MUNDICK ORE, immerfed in Grains in an 
afli-colour'd Stone. 
GREEN MUNDICK, or MundkkQre, running in Veins 
in white Clay. 
A large fphasrical and knobed FIRE-STONE, or Pyrites, 
about two inches in Diametre. 
Another, of the fame Figure, as big as a Wahut, and of 
an Iron-colour. 
A Piece of a large one of the fame Figure, and with a 
black furface. The whole Body is radiated from a Vitrio- 
lick Centre or Pith about * of an inch in Diametre. Which 
radiation is alfo feen in mod Fire-ftones. 
Another whole of the fame form, a little letter. 
A Round PYRITES, compreffed. Another lener. 
A PYRITES, partly Cylindrick, and partly Oval 3 Cy- 
Vmdroval'vs. Tis two inches long, and near an inch and \ 
over 3 Cylindrick in the middle, and Oval at both ends. 
The Surface, fmooth, and of a (hining black. 
MUNDICK ORE , as it may be call'd 5 having the 
fame Analogy to that which is figur d 3 as the Ores of Metals^ 
have to fuch as are pure and perfect. This is for the moll 
part of a greenilh aih-colour, not very hard, and fomewhat 
gritty. 
X x Yellow 
