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Uzonite

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Uzon Caldera, Kamchatka Oblast', Far-Eastern Region, Russia
© Maurice de Graaf

Formula:
As
 
4
S
 
5
System:MonoclinicColour:Yellow
Lustre:PearlyHardness:1½
Name:Named after its discovery locality, Uzon caldera, Kamchatka peninsula, Russia.
This page provides mineralogical data about Uzonite.

Classification of Uzonite

IMA status:Approved 1984
Strunz 8th edition ID:2/F.02-60
Nickel-Strunz 10th (pending) edition ID:2.FA.25

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
F : Sulfides of arsenic, alkalies; sulfides with halide, oxide, hydroxide, H2O
A : With As, (Sb), S
Dana 8th edition ID:2.8.22.3

2 : SULFIDES
8 : AmXp, with m:p = 1:1
Hey's CIM Ref.:3.7.7

3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in Section 1)
7 : Sulphides etc. of V, As, Sb and Bi
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Type Occurrence of Uzonite

Type Locality:Uzon Caldera, Kamchatka Oblast', Far-Eastern Region, Russia
Year of Discovery:1985

Physical Properties of Uzonite

Lustre:Pearly
Diaphaneity (Transparency):Transparent
Colour:Yellow
Streak:Yellow
Hardness (Mohs):1½
Cleavage:Distinct/Good

Crystallography of Uzonite

Crystal System:Monoclinic
Cell Parameters:a = 7.94Å, b = 8.08Å, c = 7.1Å
β = 100.1°
Ratio:a:b:c = 0.983 : 1 : 0.879
Unit Cell Volume:V 448.44 ų (Calculated from Unit Cell)

Optical Data of Uzonite

Type:Biaxial (+)
RI values: nα = 2.380 nγ = 2.680
Maximum Birefringence:δ = 0.300

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:relatively strong

Chemical Properties of Uzonite

Formula:
As
 
4
S
 
5
Essential elements:As, S
All elements listed in formula:As, S

Relationship of Uzonite to other Species

Related Minerals - Nickel-Strunz Grouping):
2.FA.05Duranusite
As
 
4
S
2.FA.10Dimorphite
As
 
4
S
 
3
2.FA.15Pararealgar
As
 
4
S
 
4
2.FA.15Realgar
As
 
4
S
 
4
2.FA.20Alacránite
As
 
8
S
 
9
2.FA.30Laphamite
As
 
2
(S,Se)
 
3
2.FA.30Orpiment
As
 
2
S
 
3
2.FA.35Getchellite
AsSbS
 
3
2.FA.40Wakabayashilite
[(As,Sb)
 
6
S
 
9
][As
 
4
S
 
5
]
Related Minerals - Hey's Index Grouping:
3.7.1Patrónite
VS
 
4
3.7.2Duranusite
As
 
4
S
3.7.3Dimorphite
As
 
4
S
 
3
3.7.4Realgar
As
 
4
S
 
4
3.7.5Pararealgar
As
 
4
S
 
4
3.7.6Alacránite
As
 
8
S
 
9
3.7.8Orpiment
As
 
2
S
 
3
3.7.9Jeromite
3.7.10Laphamite
As
 
2
(S,Se)
 
3
3.7.11Getchellite
AsSbS
 
3
3.7.12Wakabayashilite
[(As,Sb)
 
6
S
 
9
][As
 
4
S
 
5
]
3.7.13Pääkkönenite
Sb
 
2
AsS
 
2
3.7.14Stibnite
Sb
 
2
S
 
3
3.7.15Metastibnite
Sb
 
2
S
 
3
3.7.16Tellurantimony
Sb
 
2
Te
 
3
3.7.17Bismuthinite
Bi
 
2
S
 
3
3.7.18Nevskite
Bi(Se,S)
3.7.19Guanajuatite
Bi
 
2
(Se,S)
 
3
3.7.21Ikunolite
Bi
 
4
(S,Se)
 
3
3.7.22Laitakarite
Bi
 
4
Se
 
2
S
3.7.23Poubaite
PbBi
 
2
(Se,Te,S)
 
4
3.7.24Tellurobismuthite
Bi
 
2
Te
 
3
3.7.25Součekite
PbCuBi(S,Se)
 
3
3.7.26Tsumoite
BiTe
3.7.27Pilsenite
Bi
 
4
Te
 
3
3.7.28Hedleyite
Bi
 
7
Te
 
3
3.7.29Tetradymite
Bi
 
2
Te
 
2
S
3.7.30Joséite
Bi
 
4
TeS
 
2
3.7.31Joséite-B
Bi
 
4
Te
 
2
S
3.7.32Ingodite
Bi
 
2
TeS
3.7.33Sulphotsumoite
Bi
 
3
Te
 
2
S
3.7.34Kawazulite
Bi
 
2
Te
 
2
Se
3.7.36Skippenite
Bi
 
2
TeSe
 
2
3.7.37Kochkarite
PbBi
 
4
Te
 
7
3.7.38Rucklidgeite
(Bi,Pb)
 
3
Te
 
4
3.7.39Aleksite
PbBi
 
2
Te
 
2
S
 
2
3.7.40Junoite
Cu
 
2
Pb
 
3
Bi
 
8
(S,Se)
 
16

Other Names for Uzonite

Synonyms:
IMA1984-027Usonite
German names:
Uzonit
Russian names:
Узонит
Spanish names:
Uzonita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Uzonite

Reference List:Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1985): 114(3): 369-373.

American Mineralogist (1986): 71: 1280.

Luca Bindi, Valentina Popova, and Paola Bonazzi (2004), Uzonite, As4S5, from the type locality: single-crystal X-ray study and effects of exposure to light, Canadian Mineralogist: 41: 1463-1468.

Internet Links for Uzonite

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    Localities for Uzonite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Russia
     
    • Far-Eastern Region
      • Kamchatka Oblast'
    		No reference listed
    Mineral and/or Locality
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