158 
NOX-METALLIC MINERALS. 
oil. Aragonite, stalactitic. 
Holwell Cavern, Broomfield, So¬ 
mersetshire. 
Presented by the late A. Crosse. 
512. Aragonite, stalactitic. 
513. Aragonite, stalagmitic. 
Aldstone Moor, Cumberland. 
514. Aragonite, coralloid 
variety called “ Flos ferri,” or 
Flower of Iron. 
From the mine of Eisenerz, Styria. 
515. Aragonite, or Flos ferri, 
fine specimen. 
From the Iron Mines of Eisenerz, 
Styria. 
Presented, from the International Ex¬ 
hibition, 1862, by the Austrian Com¬ 
missioners. 
(Placed in the case beneath.) 
516. Plumbocalcite, a variety 
of Carbonate of Lime containing 
a small per-centage of Carbonate 
of Lead. 
Leadhills, Lanarkshire. 
517. Plumbocalcite. 
Leadhills, Lanarkshire. 
Presented by Patrick Dudgeon. 
518. Plumbocalcite, crystal¬ 
lized. 
Leadhills. 
519 and 520. Dolomite, or 
Bitter Spar {Carbonate of Lime 
and Magnesiaf, in rhombohedral 
crystals. 
Traversella, Piedmont. 
521. Dolomite, in rhombolie- 
dral crystals, with Copper Pyrites. 
Laxey Mines, Isle of Man. 
- 522. Dolomite, in acute rliom- 
bohedral crystals. 
From the Magnesian Limestone, 
near Thorner, Yorkshire. 
Presented by C. Brown. 
523. Dolomite, with Talc. 
Greiner, Tyrol. 
524. Dolomite, which has re¬ 
placed scalenohedral crystals of 
Calcite. 
St. AnnaVs Iron Mine, Forest of 
Dean. 
Presented by W. W. Smyth, F.R.S. 
1859. 
525. Pearl Spar (variety of 
Dolomite containing Iron), with 
Fluor Spar, on Zinc Blende. 
JSfent Head Mines, Aldstone Moor, 
Cumberland. 
526. Mesitine Spar {Carbo¬ 
nate of Magnesia and Iron), in 
lenticular crystals, with Dolomite, 
and Quartz. 
Traversella, Piedmont. 
527. Magnesite {Carbonate of 
Magnesia). 
Greece. 
528. Magnesite. 
Turkey. 
529. Magnesite. 
Piedmont. 
530. Magnesite. 
Gulsen Mountains, Styria. 
Presented, from the International Ex¬ 
hibition, 1862, by the Austrian Com¬ 
missioners. 
(Placed in the case beneath.) 
Case J. 
Quartz. 
Quartz, the siliea or oxide of silieon of the chemist, is a substance so 
variable in appearance, partly in consequence of difference of texture, 
and partly from the numerous and very marked colours given to it by a 
small proportion of certain natural pigments, that its different varieties 
have from very early periods in the history of man received special 
appellations. Many of these names, familiar to us both from sacred and 
profane history, are still retained as thoroughly convenient, notwith¬ 
standing that they were given in times when the composition also as 
well as the physical character of these minerals was supposed to be 
distinct. 
531. Rock Crystal, or colour¬ 
less Quartz. 
Dauphin^. 
532. Rock Crystal, with Al- 
bite-felspar. 
Snowdon, North Wales. 
