Nama : Adelia Irna Santika

NIM : 115.150.048

PLUG : 9

THE DESCRIPTION of THE MINERALS in the BOWEN REACTION SERIES

1. Name : OlivineComposition : (Mg,Fe)2SiO4

Hardness : 6,5Description : Green, Streak white, Translucent, Vitreous, plate 13. Orthorhombic, tabular, poor, Occurs in igneous rocks rich in Mg or Fe.

2. Name : HornblendeComposition : NaCa2(Mg,Fe.Al)5(Si8O22)(OH,F)2

Hardness : 5-6Description : Dark grren to black, sometimes brownish, streak white to grey, vitreous, monoclinic amphibole, prismatic, bladed, good intersecting, common in igneous and methamophic rocks.

3. Name : BiotiteComposition : K(Mg,Fe)3(AlSi3O10)(OH)2

Hardness : 2,5-3Description : Brown to black, atreak white to grey, Vitreous, pearly, monoclinic silicate sheet structure, perfect, common mica, a paler coloured Mg mica is called phlogopite.

4. Name : MuscoviteComposition : KAl2(AlSi3O10)(OH)2

Hardness : 2,5Description : Colourless, streak white, vitreous, pearly, monoclinic, silicate sheet structure, perfect, flexible elastic sheets, common rock forming mineral, used fpr electrical insulation.

5. Name : QuatrzComposition : SiO2

Hardness : 7Description : Colourless, white, coloured by impurities, plate 4, streak white, vitreous, trigonal, hexagonal columnar habit, massive, conchoidal fracture, common rock and vein forming mineral.

6. Name : Anortite Composition : CaAl2SiO8

Hardness : 6-6,5Description : White, grayish, Redness, Transparent, Translusan, Opaq, Vitreous Bias Index: 1573 -1590, triclinic – Pinacoida.

7. Name : LabradoriteComposition : Na (AlSi3O8) Ca (Al2Si2O8)Hardness : 6-6,5Description : Grey, Black, Translucent, Opaque, luster glass, triclinic.

8. Name : AndesineComposition : (Na, Ca) [Al (Si, Al) Si2O8]Hardness : 6-6,5

Description : Red, White, Green, Transparent to Translucent, Subitreous to pearly Index Bias: 1543 -1562, triclinic – Pinacoidal.

9. Name : AlbiteComposition : Na (AlSi3O8)Hardness : 6-6,5Description : White to Gray, Bluish, greenery, redness, Colorless, transparent to translusant, Viterious, Pearly, triclinic – Pinakonidal.

10. Name : OligoclaseComposition : (Na,Ca) AlSi3O8

Hardness : 6-6,5Description : opaque white or grayish-white, green, yellow or brown, flash glass, Transclucent-transparent, has a first direction and fractional parts konkoidal.

11. Name : BitowniteComposition : (Al,Si) AlSi2O8

Hardness : 6-6,5Description : white, gray and even colorless (colorless), luster glass, white drain, transparent-opaque, have different parts of the first direction, and fractional konkoidal

12. Name : PyroxeneComposition : (Ca,Na)(Mg,Fe,Al)(Si,Al)2O6

Hardness : 5 - 6,5Description : white, shiny glass, drain the white, short prismatic, translucent-opaque.

Reference :

http://pusakadunia.com/blog/6087/ http://younggeolog.blogspot.co.id/2012/12/plagioklas.html http://franzbonbon.blogspot.co.id/2011/04/mineral-piroksen.html J,W, Philips, N. 1980. An Introduction to Mineralogy for Geologist. New York : John Wiley &

Sons.