Notes on mineralogy. No. VII. On some rocks and minerals from central India : including two new species, hislopite and hunterite / by Samuel Haughton.

  • Haughton, Samuel.
Date:
[1859]
Catalogue details

Licence: Public Domain Mark

Credit: Notes on mineralogy. No. VII. On some rocks and minerals from central India : including two new species, hislopite and hunterite / by Samuel Haughton. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    Whatever view be adopted as to the rational formula of thi mineral, it is certain that part of its silica is in chemical coni- bination with water; and if it be regarded as a metamorphic orthoclase, it is to be considered as one from which only /aiids of the silica has been removed, and that the potash has been chemically replaced by water. No. 10. Gneiss formed from the preceding granite, composed of— 1. Watery quartz. 2. Pink, white, and yellow opaline felspar, with a waxy lustre. Locality: Nagpur City. No. 11. Fine-grained granite, composed of— 1. Quartz. 2. White felspar. 3. White mica in lozenges. 4. Small crystals of garnet (abundant). Locality: Korhadi. No. 12. Gneiss, composed of— 1. Quartz. 2. Pink orthoclase felspar {\ to \ in.). 3. Epidote. Locality : North of Segaum. No. 13. Gneissose granite, composed of— 1. Quartz. 2. Red orthoclase felspar (predominant). 3. Blackish-green mica (abundant). 4. Epidote (traces). Locality : Nulla, North of Segaum. No. 14. Siliceous breccia, formed of angular pinkish-white opake jasper {\ in.), cemented by silicate of iron, forming a delicate green jasper. Locality: Tertiary beds of Telankhedi. No. 15. Crystalline calcareous limestone, containing strings and patches of red haematite; possibly of some value as an iron ore. Locality: Korhadi. No. 16. Crystalline calcareous limestone, with traces of grossu- larite; probably metamorphic. Locality : Korhadi. No. 17. Brown haematite, in stratified nodular concretions; like the oolitic ore of Leicestershire. Locality : Iron-band of Sil- lewada. No. 18. Black tourmaline crystals, in quartz. Locality: Nag- pur City. No. 19. Amygdaloidal basalt, decomposing; contains rounded cavities filled with green earth. Locality: Sitawaldi Hill.