Author(s): BENY C. ; model: U1000
Date: 19 january 93
file name: ALUN1.S00 pdf
Recording laboratory: Lab. mixte (BRGM-CNRS- Univ. OrlÈans) de spectromÈtrie Raman
References:
2nd file name:
Structural formula: KAl3(SO4)2(OH)6
Name: Alunite
Family: Sulfates
Group:
Origin: natural [x] locality: Allumiere(Italy) synthetic [_] method: P: T:
Solid: crystal [x] powder [_] glass [_]
Fluid: liquid [_] gas [_]
Preparation: Thick section [_] thin section [_] raw sample [x]
Colour: greyish opaque [x] transparent [_] translucent [_]
Conditions of measurement: room P room T
Polarization setting: PORTO ( ) VV [_]; VH [_]; none [x]
Laser: Ar+ 0 = 514.5 nm;
Sample photosensibility:
Laser power: at laser: 300 mW, at sample:
Raman scattering efficiency: **
Spectral resolution: 5 cm-1
Calibration: Ar+: 77 cm-1
Spectrometer: JOBIN-YVON macro [x] micro [_] objective:; N.A.: monochannel [x] multichannel [_]
scan rate: cm-1/mn
step: 1 cm-1
counting time: 1 s
integration time: s
number of scans: 1
accumulations:
Reference:
Crystal system:Rhom.;
Z:;
space group:
Factor group analysis:
Raman shift (cm-1): 3508 3480 1185 1148 1074 1023 651 556 506 483 378 344 231 159 142
Observations: Nƒ 16925/59 Collection of Museo di Mineralogia Universitý "La Sapienza" Roma (Italy)