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Petrography @ Rosana 2015

PETROGRAPHY

PENDAHULUAN

(Review in mineralogi, petrologi)

9/1/2015Petrography @ Rosana 2015 1

Petrografi_01 : Pendahuluan

Nama Mata Kuliah : PETROGRAFI

SKS : 3 SKS

TPU: Setelah menyelesaikan mata kuliah mata kuliah

petrografi, anda akan dapat membedakan jenis jenis

batuan secara mikroskopis (C3).


KONTRAK PERKULIAHAN


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KRITERIA PENILAIAN :

Kehadiran perkuliahan minimal 80%

Nilai kuliah 60%, meliputi :

Kuis + Tugas 20%

UTS 40%

UAS 40% +

100% (A)

Nilai praktikum 40%, meliputi:

Laporan praktikum (harian) 40%

UTS 30%

UAS 30% +

100% (B)

Nilai akhir 60% (A) + 40% (B) = 100% (C)


KONTRAK PERKULIAHAN

Nilai akhir (C) dikonversikan ke dalam huruf

mutu dengan menggunakan kriteria penilaian

acuan patokan sebagai berikut:


KONTRAK PERKULIAHAN

Huruf Mutu Angka Mutu Range

A 4 80

B 3 68 - 79

C 2 56 -67

D 1 45 -55

E 0 45


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JADWAL KULIAH PETROGRAFI


JADWAL KULIAH PETROGRAFI


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DAFTAR PUSTAKA

Kerr, Paul F., 1959 : Optical Mineralogy.3th edition, McGraw-Hill, Book

Company, Inc. p.442

Bloss. F., D., 1961 : An Introduction To The Methods Of Optical

Crystallography, Halt Rinehart And Winston, N Y. p. 293

Wahlstrom., E., E., 1960 :Optical Crystallography, John Willey, N Y. p.247

Winchell., A., N., And Winchell H., 1968 :Optical Mineralogy. Vol. I, Willey

Earstern Private Ltd. New Delhi. p.356

Phillips., W., R., 1971 :Mineral Optics, Freeman USA. p. 294

Koesmono., M., 1973 : Kristalografi Optika, Dokumentasi Jurusan Geologi

FMIPAUNPAD

Troger., W., E., 1977 :Optical Determination Of Rock Forming Minerals. Part

i. Nagele U. Obermiller, Stuttgart.


Barth.T.F.W., 1952, Theoretical Petrology, John Wiley, New York

Hatch. F. H., Wells A. K., Wells M. K., 1972, Petrology of the Igneous Rocks,Thomas Murby, London

Hyndman D. W., 1972, Petrology of Igneous and Metamorphic Rocks, Mc. GrawHill. New York. Harper & Row

Moorhouse W. W., 1959, The Study of Rocks in Thin Section,

Trger W. E., 1979, Optical Determination of Rock-Forming Minerals, Part 1,English Edition the 4th German Edition by Bambauer H. U., Taborszky F., TrochimH. D., E. Schweizerbartsche Verlags Buchhandlung. Stuttgart

Wahlstrom E. E., 1958, Igneous Mineral and Rocks, John Wiley, New York

Wahlstrom E. E., 1958, Introduction to Theoretical Igneous Petrology, vol 1, JohnWiley, New York

William W., Turner F. J., Gilbert C. M., 1953, Petrography an Introduction to theStudy of Rocks in Thin Section, Freeman

Carmichael I. S. E., Turner F. J., Verhoogen J., 1974, The Igneous Petrology. Mc.Graw Hill. USA

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Hutchison C. S., 1973, Tectonic Evaluation of Sundaland. A Phanerozoic synthesis.

Geol. Soc. Malaysia Bulletin. h.61-86

Irvine T.N., Baragar W. R. A., 1971, A Guide to the Chemical Classification of theCommon Volcanic Rocks. Can. Jowe Earth Sci. V.8. N.5. h.523-548

Johannsen A., 1939, A Descriptive Petrography of the Igneous Rocks, vol. 1, The

Univ. of Chicago. Press Illinois

Kuno H., 1966, Lateral Variation of Basalt Magma Type Across Continental Margin

and Island Arcs. Bull. Volc. V.29, h.195-222

Le Bas M. J., Le Maitre R. W., Streckeisen A., Zanettin B., 1985, A Chemical

Classification of Volcanic Rocks. Base on the Total Alkali-Silica Diagram IUGS.

Sub commission on the systematics of Igneous Rocks

Mc. Donald G. A., 1969, Pantelleritic Obsidians From the Volcano Chabbi

(Ethiopia) Contrib. Mineral Petrol. V.24, h.239-244

Mc. Donald G. A., Katsura T., 1964, Chemical Composition of Hawaiian Lavas.

Jour. Petrol. V.5, h.82-133

Middlemost, EricA. K., 1975, The Basalt Clam Earth Sci. Rev. h.337-364 Osamu Hirokawa, 1980, Introduction to Description of Volcannoes and Volcanics

Rocks. Mineral Technology Development Centre. Bandung




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1. ISOMETRIK

2. TETRAGONAL

3. HEKSAGONAL / TRIGONAL

4. ORTORHOMBIK

5. MONOKLIN

6. TRIKLIN


SISTIM KRISTAL


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ISOMETRIK

PANJANGSUMBU a=b=c

SUDUT== = 90


TETRAGONAL

PANJANGSUMBU a=bc

SUDUT== = 90



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HEKSAGONAL/TRIGONAL

PANJANGSUMBU a1=a2=a3c

Sumbu ctegaklurus (a1;a2;a3=120)


ORTORHOMBIK

PANJANGSUMBU abc

SUDUT== = 90



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MONOKLIN

PANJANGSUMBU abc

SUDUT= = 90 ; 90


TRIKLIN

PANJANGSUMBU abc

SUDUT > 90



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Kedudukan sumbu kristal

dan bentuk sederhana

dari 6 sistim kristal

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Bentuk kenampakan dari suatu kristal disebutHABIT.Kristalyangmempunyai bentuk habitsama dan terdapat secara bersama dan takterpisahkan disebut AGREGAT.

Habitdari suatu kristal akan bergantung pada:*Temperatur*Tekanan*Komposisi larutan asal*Pengotoran*Kecepatan pembekuan/penguapan


KRISTAL HABIT dan AGREGAT


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Ekspresi kristal habit yang umum di jumpai

TabularPlaty

Micaceous

Equidimensional

Prismatik

Acicular

Fibrous

Dan lain-lain


SISTEM ISOMETRIK

Berlaku hukum Spinel

Bidang kembar terletak pada (111)

SISTEM HEKSAGONAL / TRIGONAL

Berlaku hukum Dauphine


Berlaku hukum Brazil


Berlaku hukum JapaneseBidang kembar terletak pada (1122)


KRISTAL KEMBAR


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SISTEM TETRAGONALBidang kembar terletak pada (011) / (110)

SISTEM ORTORHOMBIK

Bidang kembar terletak pada (110) dan (232)

SISTEM MONOKLIN

Berlaku hukum Karlsbad

Bidang kembar terletak pada sumbu c

Berlaku hukum Baveno


Berlaku hukum Manebach


SISTEM TRIKLIN

Berlaku hukum Albit

Bidang kembar terletak pada (010)Berlaku hukum Periklin

Bidang kembar terletak pada sumbu b


KRISTAL KEMBAR



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ROCKS ...how to identify them under the

microscope


Identifikasi sifat optikmineral-mineral penyusun

batuan

BOWEN SERIES



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BOWEN SERIES

THE ROCK CYCLE



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(*)9/1/2015Petrography @ Rosana 2015 29

SEDIMENTARY ROCKS


SEDIMENTARY ROCKS are composed of particles derivedfrom preexisting rocks or by the crystallization ofminerals that were held in solutions. A generalcharacteristic of this group is the layering orstratification,as seen in the outcrop.

Thosesedimentaryrocksthatare

composedofparticlesofpreexistingrocksareconsideredFRAGMENTALorCLASTIC. Thesefragmentsshowevidenceoftransport roundingofthegrainsandsizesorting.

CHEMICAL sedimentary rocks are the

result of either precipitation of solidsfrom solutions (like salt from water) or

by organic process, like shells from

marine organisms.


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METAMORPHIC ROCKS


METAMORPHIC ROCKS have changed (meta) their form (morphic).Under the influence of heat, pressure and fluids, preexisting rocksare modified in form and even in internal atomic structure to producenew rocks stable at the new conditions. This is done within the solidstate, i.e.without melting.

Changes that occur include: increase in grain size, new minerals andfoliation (parallel alignments).

MetamorphicrocksthatexhibitparallelalignmentsofmineralsarecalledFOLIATED. In

these

rocks,

the

minerals

alllineupperpendiculartotheexertedpressure.

Metamorphic rocks composed ofminerals that are not elongatedor flat, do not exhibit parallelalignments and are called

NON-FOLIATED.



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Ruang Lingkup MineralOptik &Sifatsifat Cahaya

To be Continue

OPTICAL PROPERTIES OF MINERALS


pgrafi 01 pendahuluan bw

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