| Pirus | |
|---|---|
Batu pirus berukuran 25 mm
|
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| Umum | |
| Kategori | |
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Rumus
(unit berulang) |
CuAl 6 (PO 4 ) 4 (OH) 8 ·4H 2 O |
| Klasifikasi Strunz | 08.DD.15 |
| Sistem kristal | Triklinis |
| Identifikasi | |
| Warna | Toska |
| Masif, nodular | |
| Belahan | Biasanya baik ke sempurna |
| Kekerasan dalam skala Mohs | 5–7 |
| Gores | Putih kebiruan |
| Berat jenis | 2.6–2.9 |
| Sifat optik | Biaxial (+) |
| Indeks bias | nα = 1.610 nβ = 1.615 nγ = 1.650 |
| +0.040 | |
| Pleokroisme | Lemah |
| Menyatu dalam HCl yang dipanaskan | |
| Kelarutan | Larut dalam HCl |
| Referensi | [ 1 ] [ 2 ] [ 3 ] |
Pirus ( bahasa Inggris : turquoise ) merupakan mineral tidak tembus cahaya berwarna toska yang dianggap sebagai batuan berharga karena warnanya yang unik.
Etimologi
Istilah "pirus" berasal dari kata bahasa Arab فيروز ( fairuz ).
Referensi
- ^ Hurlbut, Cornelius S.; Klein, Cornelis, 1985, Manual of Mineralogy , 20th ed., John Wiley and Sons, New York ISBN 0-471-80580-7
- ^ "Turquoise:turquoise mineral information and data" . mindat.org . Diakses tanggal 2006-10-04 .
- ^ Anthony, John W.; Bideaux, Richard A.; Bladh, Kenneth W. and Nichols, Monte C., ed. (2000). "Turquoise". Handbook of Mineralogy (PDF) . IV (Arsenates, Phosphates, Vanadates). Chantilly, VA, US: Mineralogical Society of America. ISBN 0962209732 .
Bacaan lanjut
- British Museum (2000). Aztec turquoise mosaics . Retrieved November 15, 2004 from www.thebritishmuseum.ac.uk
- Dietrich, R. V. (2004). Turquoise . Retrieved November 20, 2004 from www.cst.cmich.edu/users/dietr1rv/turquoise.htm
- Persian Turquoise Mine [1] Diarsipkan 2019-06-26 di Wayback Machine .
- King, R. J. (2002) Turquoise . Geology Today 18 (3), pp. 110–114. Retrieved November 24, 2004, from: http://doi.org/10.1046/j.1365-2451.2002.00345.x
- Pogue, J. E. (1915). The turquoise: a study of its history, mineralogy, geology, ethnology, archaeology, mythology, folklore, and technology . National Academy of Sciences, The Rio Grande Press, Glorieta, New Mexico. ISBN 0-87380-056-7
- Schadt, H. (1996). Goldsmith's art: 5000 years of jewelry and hollowware . Arnoldsche Art Publisher, Stuttgart, New York. ISBN 3-925369-54-6
- Schumann, W. (2000). Gemstones of the world , revised edition. Sterling Publishing. ISBN 0-8069-9461-4
- Webster, R. (2000). Gems: Their sources, descriptions and identification (5th ed.), pp. 254–263. Butterworth-Heinemann, Great Britain. ISBN 0-7506-1674-1
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