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Kilap: Metallic Kristal: Hexagonal Kekerasan:1-2 Belahan: Cleavage satu arah Warna: Abu-abu atau hitam (gelap) Streak: Hitam Rumus kimia : C

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Earth Science 101 - Details

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1) Chapter 1 View

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16 questions

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Kilap: Metallic Kristal: Hexagonal Kekerasan:1-2 Belahan: Cleavage satu arah Warna: Abu-abu atau hitam (gelap) Streak: Hitam Rumus kimia : C

Graphite

Kilap: Metallic Kristal: Isometric/cubic Kekerasan: 2,5 Belahan: Cleavage tiga arah Warna: Abu-abu Karakteristik: Densitas tinggi Streak: Abu-abu Rumus kimia : PbS Kelompok: Sulfida

Galena

Kilap: Metallic Kristal: Isometric Kekerasan: 5,5-6,5 Belahan: Fracture Warna: Hitam Karakteristik: Bersifat kemagnetan Streak: Hitam Rumus kimia: Fe3O4 Kelompok: Oksida dan hydroksida

Magnetite

Kilap: Metallic Kristal: Isometric Kekerasan: 6,5 Belahan: Fracture Warna: Kuning Habit: Cubic Karakteristik: Sering disebut emas palsu Streak: Hitam Rumus kimia: FeS2 Kelompok: Sulfida

Pyrite

Kilap: Metallic or nonmetallic Kristal: Trigonal Kekerasan: 5,5 Belahan: Fracture Warna: Abu-abu, hitam, cokelat Streak: Cokelat kemerahan Rumus kimia: Fe2O3 Kelompok: Oksida dan hydroksida

Hematite

Kilap: Nonmetallic (waxy) Kristal: Monoclinic or triclinic Kekerasan: 1 Belahan: Cleavage satu arah Warna: Putih kekuningan Habit: Fine granular, platy Karakteristik: Tekstur licin, berbau tanah Streak: Putih Kelompok: Silikat

Talc

Kilap: Nonmetallic Kristal: Orthorhombic Kekerasan: 2 Belahan: Fracture Warna: Kuning terang Karakteristik: Densitas sangat rendah, retak bila terkena panas, bau menyengat Streak: Kuning keputihan Rumus kimia: S Kelompok: Native element

Sulfur

Kilap: Nonmetallic (vitreous) Kristal: Monoclinic Kekerasan: 2 Belahan: Cleavage dua arah Warna: Putih bening Karakteristik: Soluble in hot dilute HCl Streak: Putih Rumus kimia: CaSO4, 2H2O Kelompok: Sulfat

Gypsum

Kilap: Nonmetallic (vitreous to pearly) Kristal: Monoclinic Kekerasan: 2-2,5 Belahan: Cleavage satu arah Warna: Bening Karakteristik: kebeningannya dan berupa lembaran Streak: Abu-abu terang Kelompok: Silikat

Muscovite

Kilap: Nonmetallic (vitreous) Kristal: Isometric/cubic Kekerasan: 2-2,5 Belahan: Cleavage tiga arah Warna: Bening terang Karakteristik: Water soluble Streak: Putih Rumus kimia: NaCl Kelompok: Halogenida

Halite

Kilap: Nonmetallic (vitreous) Kristal: Monoclinic Kekerasan: 2,5-3 Belahan: Cleavage satu arah Warna: Cokelat Karakteristik: Warna gelap Streak: Putih keabuan Kelompok: Silikat

Biotite

Kilap: Nonmetallic (vitreous) Kristal: Trigonal Kekerasan: 3 Belahan: Cleavage tiga arah Warna: Bening terang Habit: Tabular/rombohedral Karakteristik: Soluble in dilute acids Streak: Putih Rumus kimia: CaCO3 Kelompok: Karbonat

Calcite

Kilap: Nonmetallic (Subvitreous) Kristal: Trigonal Kekerasan: 3,5-4 Belahan: Fracture Warna: Kuning keputihan Karakteristik: Reacts with acid after scratching Streak: Putih Kelompok: Karbonat

Dolomite

Kilap: Nonmetallic (vitreous) Kristal: Isometric Kekerasan: 4 Belahan: Cleavage empat arah Warna: Bening keunguan/kehijauan Streak: Putih Rumus kimia: CaF2 Kelompok: Karbonat

Fluorite

Kilap: Nonmetallic (vitreous) Kristal: Monoclinic/orthorhombic Kekerasan: 5-6 Belahan: Cleavage dua arah Warna: Hijau, hitam, cokelat Habit: Prismatic, acicular, dendritic Streak: Putih Kelompok: Silikat

Pyroxene (augite)

Kilap: Nonmetallic (vitreous) Kristal: Orthorhombic/monoclinic Kekerasan: 6-7 Belahan: Cleavage dua arah Warna: Hitam kehijauan Habit: Prismatic, granular Streak: Unobtainable Kelompok: Silikat

Amphibole (hornblende)