Muhamad Irvan
PETROLOGI 1202076
DESKRIPSI MINERAL TAMBAAN TAMBAAN 2
UNIVERSITAS NEGERI PADANG
MINERAL TAMBAHAN ( Accesory Minerals) M!n"ra# $am%ahan a$au &"r!n' d!&"%u$ (u'a m!n"ra# a)&"&*r! !n! ada#ah m!n"ra# +an' ,"r&"n$a&"n+a &an'a$ &"d!)!$ da#am %a$uan- namun &"#a#u d!$"mu)an. M!n"ra# !n! (um#ahn+a )uran' dar! 10/ dar! &"#uruh )*m,*&!&! %a$uan. Dan )ar"na )"$"rda,a$ann+a &an'a$ &"d!)!$- m"n(ad!)an m!n"ra#m!n"ra# $am%ahan !n! m"m!#!)! n!#a! +an' ")*n*m!& +an' $!n''!. Pada umumn+a m!n"ra# $am%ahan !n! d!'una)an un$u) ,"rh!a&an &","r$! ru$!#. Namun ada (u'a +an' d!'una)an da#am !ndu&$r! dan m"m!#!)! n!#a! +an' &an'a$ $!n''! &","r$! !r*n. 3*n$*h #a!nn+a dar! m!n"ra# $am%ahan !n! ada#ah $urma#!n.
1. Apatite
Kategori Formula
"olor Ha#it
)istem Kristal
Belaha *e%aha
Ph*&,ha$" m!n"ra# 3a5PO89:-3#-O8 Tran&,aranTran&#u"n$ Ta%u#ar- ,r!&ma$! r+&$a#&- ma&&!v"*m,a$ *r 'ranu#ar "?a'*na# d!,!ram!da# 6@m !nd!&$!n$ 3*nh*!da# $* un"v"n1 5
Gores
4h!$"
Diaphaeit!
$ran&#u"n$
Desit! Re$ra%ti&e i'e
9.16;9.22 1.69;1.69< =0.012- >0.0068
Bire$rige% e Dispersio Fusi#ilit!
0.002;0.00<
Kilap
Ke+erasa
,. Limoite
1
0-019 d"h+dra$"& a$ 550; 750 C3 V!$r"*u&
Kategori Formula
Formula mass -ara
Am*r,h*u&m!n"ra#*!d
Ke+erasa
5
M'3O9
Kilap
Ear$h+
Gores
:"OO8n2O
F"##*4!&h %r*4n
3*)"#a$ dan )un!n'
Diaphaeit!
O,au"
:!n" 'ra!n"d a''r"'a$"- ,*4d"r+ *a$!n'
)pe%i% gra&it!
2.H .9
Belaha
Desit!
2.7 .9 '@m9
*e%aha
Un"v"n
Ketahaa
Br!$$#"
Ke+erasa
5.5 ; 6.5
Kilap
M"$a#!
Gores
Jh!$"
Ha#it
/. Hematite
Kategori
O?!d" m!n"ra#&
Formula !r*nIII8 *?!d"- :"2O9:"2O9
Formula mass -ara Ha#it
M"$a#! Gra+- du## $* %r!'h$ R"d
Diaphaeit!
Ta%u#ar $* $h!) r+&$a#& m!a"*u& *r ,#a$+*mm*n#+ !n r*&"$$"& rad!a$!n' %r*u&- r"n!*rm-
)pe%i% gra&it!
2
Tran&,ar"n$ $* $ran&#u"n$ 9.0 9.2
%*$r+*!da# *r &$a#a$!$! ma&&"&- *#umnar "ar$h+'ranu#ar- **#!$!
)istem Kristal
Tr!'*na#
0pti%al properties
Un!a?!a# 8
Belaha
Re$ra%ti&e i'e
n 9.150;9.220- n 2.<70;2.H0
*e%aha
Un"v"n $* &u% *nh*!da#
Bire$rige% e
Q 0.2<0
Ketahaa
Br!$$#"
Ke+erasa
5.5 ; 6.5
Kilap
M"$a##!
Gores
!$am
!$am- A%ua%u )"*)#a$an
Diaphaeit!
O,au"
O$ah"dra#- n" 'ranu#ar $* ma&&!v"
)pe%i% gra&it!
5.17;5.1<
I&*m"$r! "?*$ah"dra#
*e%aha
Un"v"n
V"r+ :**d
Ketahaa
Br!$$#"
. Magetite
Kategori
O?!d" m!n"ra#& S,!n"# 'r*u, S,!n"# &$ru$ura# Gr*u,
Formula
Formula mass -ara Ha#it )istem Kristal Belaha
!r*nII-III8 *?!d":"2=:"9=2O
2. 3eolit
9
"*#!$ ada#ah &"("n!& $anah +an' m"n'andun' a#um!n!um- &!#!)*ndan *)&!'"n. A$*ma$*m !n! %"r!)a$an m"m%"n$u) &$ru)$ur 9 d!m"n&! +an' m"m!#!)! %an+a) mua$an n"'ar!. S"#uruh mua$an n"'a$! !n! haru& d!n"$ra#)an d"n'an mua$an ,*&$a#. Umumn+a- "*#!$ %"r!)a$an d"n'an !*n Na= m"m%"n$u) &"n+a4a na$r!um "*#!$ Na"*#!$8. Zeolit +an'
m"m!#!)! rumu& Na2AI2S!O90108.220 a$au m"m!#!)! ,*r!,*r! +an' da,a$ d!#"4a$! *#"h a!r. K"$!)a &ua$u #aru$an +an' m"n'andun' !*n 3a2=-M'2= a$au :"9= d!#"4a$)an m"#a#u! "*#!$- !*n !*n !n! a)an m"n''an$!)an !*n Na=. a# !n! d!&"%a%)an !*n Na= %"r!)a$an #"%!h #"mah d"n'an ma$r!)& "*#!$ d!%and!n')an !*n 3a2=-M'2= a$au :"9=
