Sinabar
| Sinabar | |
|---|---|
 Sinabar | |
| Umum | |
| Kategori | Mineral sulfida |
| Rumus (unit berulang) | Merkuri(II) sulfida, HgS |
| Klasifikasi Strunz | 2.CD.15a |
| Sistem kristal | Trigonal |
| Kelas kristal | Trapezohedral (32) (sameH-M symbol) |
| Grup ruang | P3121,P3221 |
| Sel unit | a = 4.145(2) Å, c = 9.496(2) Å, Z = 3 |
| Identifikasi | |
| Warna | Cochineal-red, towards brownish red and lead-gray |
| Perawakan | Rhombohedral to tabular; granular to massive and as incrustations |
| Bentuk kembaran | Simple contact twins, twin plane {0001} |
| Belahan | Prismatic {1010}, perfect |
| Fraktur | Uneven to subconchoidal |
| Sifat dalam | Slightly sectile |
| Kekerasandalamskala Mohs | 2.0-2.5 |
| Kilau | Adamantine to dull |
| Gores | Scarlet |
| Diafaneitas | Transparan dalam pecahan tipis |
| Berat jenis | 8.176 |
| Sifat optik | Uniaxial (+) |
| Indeks bias | nω= 2.905 nε= 3.256 |
| Bias ganda | δ = 0.351 |
| Kelarutan | 1.04 x 10−25g per 100 ml water (Ksp at 25 °C = 2 x 10−32)[1] |
| Referensi | [2][3][4][5] |
Sinabar(/ˈsɪnəbɑːr/) dancinnabarite(/sɪnəˈbɑːraɪt/), yang tampaknya berasal dari katabahasa Yunani Kuno:κιννάβαρι[6](kinnabari), merujuk kepada bebatuan bata berwarna bata merah berunsurmerkuri(II) sulfida,berumur HgS, yang merupakan sumberbijihpaling umum untuk mendapatkanunsur merkuri.
Sinabar digunakan sebagai pewarna sejak zaman kuno diTimur Dekat.
Pada zaman kuno, sinabar digunakan sebagai pengobatan sejak 2000 tahun terakhir. Beberapa rujukan tersedia dalam teks-teks Sansekerta.
Referensi
[sunting|sunting sumber]- ^Myers, R.J. (1986). "The new low value for the second dissociation constant of H2S. Its history, its best value, and its impact on teaching sulfide equilibria ".J. Chem. Ed.63:689, 687–690.
- ^Mineralienatlas
- ^"Cinnabar (Hgs)"(PDF).Rruff.geo.arizona.edu.Diakses tanggal2015-07-24.
- ^"Cinnabar: Cinnabar mineral information and data".Mindat.org.Diakses tanggal2015-07-24.
- ^"Cinnabar Mineral Data".Webmineral.com.Diakses tanggal2015-07-24.
- ^
Chisholm, Hugh, ed. (1911). "Cinnabar".Encyclopædia Britannica.6(edisi ke-11). Cambridge University Press. hlm. 376.
Bacaan tambahan
[sunting|sunting sumber]- Susan Stewart, 2014, "'Gleaming and deadly white': Toxic cosmetics in the Roman world," pp. 84f,79-88, inHistory of Toxicology and Environmental Health: Toxicology in Antiquity II(Philip Wexler, Ed.), New York, NY, USA:Academic Press,ISBN 0-12-801634-5
Barone G., Di Bella M., Mastelloni M.A., Mazzoleni P., Quartieri S., Raneri S., Sabatino G., Vailati C.,Pottery production of the pittore di lipari: chemical and mineralogical analysis of the pigments, in 2 end European Mineralogical Conference, emc2016 “Minerals, fluids and rocks: alphabet and words of planet earth”, Rimini, 11-15 sett. 2016, p. 716
Pranala luar
[sunting|sunting sumber]
- MSDS untuk sinabarDiarsipkan2007-09-12 diWayback Machine.
- Dartmouth Toxic Metals Research Program – MercuryDiarsipkan2009-06-26 diWayback Machine.
- Cinnabar visual reference
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