Templat:Infobox mineral: Perbedaan antara revisi
Konten dihapus Konten ditambahkan
k Robot: Perubahan kosmetika |
Tidak ada ringkasan suntingan Tag: Suntingan perangkat seluler Suntingan aplikasi seluler |
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| label24 = Sifat optik |
| label24 = Sifat optik |
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| data24 = {{{opticalprop|}}} |
| data24 = {{{opticalprop|}}} |
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| label25 = [[Indeks |
| label25 = [[Indeks bias]] |
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| data25 = {{{refractive|}}} |
| data25 = {{{refractive|}}} |
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| label26 = [[Bias ganda]] |
| label26 = [[Bias ganda]] |
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Revisi per 16 April 2017 11.48
Penggunaan
| Batu delima | |
|---|---|
 Kristal batu delima alami | |
| Umum | |
| Kategori | Variasi mineral |
| Rumus kimia | aluminium oksida dengan kromium, Al2O3:Cr |
| Identifikasi | |
| Warna | Merah, bisa kecoklatan, keunguan atau kemerahjambuan |
| Perawakan | Bervariasi tergantung daerahnya. Prisma heksagonal bertabel buntu. |
| Sistem kristal | Kelompok Ruang Simbol (-3 2/m) Trigonal (Heksagonal Skalenohedral): R-3c |
| Belahan | Tidak ada bersihan asli |
| Pecahan | Tidak genap atau konkoidal |
| Skala kekerasan Mohs | 9.0 |
| Kilap | Kekacaan |
| Gores | putih |
| Diafaneitas | transparan |
| Kepadatan | 4'000 Kg/m3 |
| Indeks bias | nω=1.768 - 1.772 nε=1.760 - 1.763, Bias ganda 0.008 |
| Pleokroisme | Merah kejinggaan, merah keunguan |
| Fluoresens ultraviolet | merah di bawah gelombang panjang |
| Titik lebur | 2044 °C |
| Kelarutan | tidak ada |
| Variasi utama | |
| Safir | Semua warna kecuali merah |
| Korundum | berbagai warna |
| Emeri | Granuler |
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