The blowpipe vade macum : the blowpipe characters of minerals deduced from the original observations of Aquilla Smith ; alphabetically arranged and edited by Samuel Haughton and Robert H. Scott / [Aquilla Smith].
- Aquilla Smith
- Date:
- 1862
Licence: Public Domain Mark
Credit: The blowpipe vade macum : the blowpipe characters of minerals deduced from the original observations of Aquilla Smith ; alphabetically arranged and edited by Samuel Haughton and Robert H. Scott / [Aquilla Smith]. Source: Wellcome Collection.
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No text description is available for this image
No text description is available for this image
No text description is available for this image![Order II.—Incombustible. I. Dinsion.—Fuse into a slag or head. A. With exfoliation, intumescence, or effervescence. a. Bead colourless or white. 1. Anhydrous. 8. Prehnite. Pale yellowish green, fuses readily with horax. 9. Scapolite. With borax it fuses with effervescence until the assay is entirely dissolved. 10. Spodumene. Contains litliia, and tinges the flame carmine red, when its proper dux or test is used. 11. Peai’lstone. Occurs in globular concretions, and fuses with some difficulty. 2. Hydrous. 12. Selenite. Exfoliates or curls up; yields to the nail. 13. Stilhite. Ditto, ditto. ditto, high pearly lustre, ditto, square prisms, or some with ditto, in long radiating prisms, ditto, ditto. Intumesces much, does not gelatinize in 14. Heulandite. Ditto, 15. Apophyllite. Ditto, four-sided pyramids. 16. Thompsonite. Ditto, 17. Skolezite. Ditto, 18. Chahasie or Levyne. warm nitric acid. 19. Laumonite. Gelatinizes, in nitric acid. 20. Mesole. Ditto, ditto, in globules of a radiated striictiXirG • 21. Chalilite. Ditto, ditto, amorphous, colour red- dish or yellow. 22. KiUinite. Pound only in granite atKilliney, county ofDubhn. ]^0TE.—Nos. 13 to 21, inclusive, are found only in trap rocks, and chiefly in the north of Ireland. h. Bead coloured. 1. Form a slag or scoria. 23. Epidote or Zoisite. Baikalite. 24. Dark-green Tourmaline. 2. Form a smooth bead. 25. Idocrase. Hardness = 6-0. 26. Talc. Soft, in thin laminae, not elastic. 27. Moimtaiu Cork. Amorphous, yields to the nail.](https://iiif.wellcomecollection.org/image/b24878583_0068.jp2/full/800%2C/0/default.jpg)