Part III. 
Of KeguUn Stones* 
A YELLOW TIN-SPAR from Ireland. Given by 
Sir Rob. Moray. The feveral Cryftals are angular, pointed, 
and foft 3 femiperfpicuous like brown Stigar-Candy. Diflb- 
luble with Acids. 
An Iron-SPAR. A Clufter of fmall, pointed Cryftals, 
almoft of the colour of brown Sugar-Candy ^but fader, and 
lefs perfpicuous. Tis hard enough to cut Glafs. 
ANOTHER, Mixed. In the middle 3 it hath many Stria; 
of a Lead-Ore colour, running crofs one againft another. 
Thefe are encompafted with other parts of the colour of 
yellow Okre. With which are alfo mixed fome white and 
green fpots. The Stone tafteth like white Vitriol. 
A large- Copper-SPAR. Given by Mr. Langerman. Tis 
a * of a yard long, and near as broad. Confifting moftly 
of fexangular Points, upon a grey Bed, which is alfo mixed 
with Granulated Spars. The other fide, all befprinkled with 
yellow Mundick. 
A MUNDICK-SPAR ; confifting of tabulated or flat 
and fquare Cryftals, of the colour of Citrine Amber, and 
growing to a whitifh Matrix. 
Note, That almoft all Spars of this kind, are compofed 
of tabulated, and fquare Cryftals. 
ANOTHER, confifting of black fhining Cryftals y of the 
colour of Jet, and as broad as a Dice 3 and fome of them 
almoft Cubical. Being broken, the fragments are of an 
Amethyftine colour. There are alfo , underneath , fome 
whitifh Cryftals 3 above, fome of yellow Mundick. 
ANOTHER, partly plated, and partly pointed 3 of a 
black fhining colour, like that of polilh'd Steel. Tis very 
ponderous, and maketh no Effervefcence with Acids. Yet 
foft and brittle. Which three Properties, belong to moft, if 
not all, Mundick: Spars. 
A SPAR with CONICK CRYSTALS. They are moft 
of them an inch and ? long. All very clofe and continuous, 
excepting at their Pomts,as in the y4;?/e//^//.Semiperfpicuous, 
and exactly of the colour of the beft brown Sugar-Candy. 
Very foft 3 and eafily diifolved with Spirit of Nitre. It 
was taken out of a Portland-Stone 5 and given by Sir Rob. 
Moray. 
A SPAR with CRYSTALS TRIANGULARLY pointed. 
Tis a pretty round Lump. The Cryftals fo placed, that 
R r 2 the 
