SUPPORT US. Covid-19 has significantly affected our fundraising. Please help!
主页关于 MindatMindat手册Mindat的历史版权Who We Are联系我们于 Mindat.org刊登广告
捐赠给 MindatCorporate Sponsorship赞助板页已赞助的板页在 Mindat刊登 广告的广告商于 Mindat.org刊登广告
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe Elements书籍及杂志
搜索矿物的性质搜索矿物的化学Advanced Locality Search随意显示任何一 种矿物Random Locality使用minID搜索邻近产地Search Articles搜索词汇表更多搜索选项
Mindat手册添加新照片Rate Photos产区编辑报告Coordinate Completion Report添加词汇表项目
Mining Companies统计会员列表Mineral Museums矿物展及活动The Mindat目录表设备设置
照片搜索Photo GalleriesSearch by Color今天最新的照片昨天最新的照片用户照片相集过去每日精选照片相集Mineral Photography


This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About AlacrániteHide

Orange to pale gray with rose-yellow internal reflections
Vitreous, Resinous, Greasy
Specific Gravity:
Crystal System:
Named after its discovery locality in Chile.
Different from (unnamed) natural beta-As4S4.

Classification of AlacrániteHide

Approval Year:

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

8 : AmXp, with m:p = 1:1

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

Physical Properties of AlacrániteHide

Vitreous, Resinous, Greasy
Orange to pale gray with rose-yellow internal reflections
yellow-orange in transmitted light
1½ on Mohs scale
VHN20=69 kg/mm2 - Vickers
Very brittle
imperfect on {100}
3.43(3) g/cm3 (Measured)    3.43 g/cm3 (Calculated)

Optical Data of AlacrániteHide

Biaxial (+)
RI values:
nα = 2.390(1) nγ = 2.520(2)
Max Birefringence:
δ = 0.130
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
r < v
400nmR1=13.0%R2= 14.0%
425nmR1=13.2%R2= 14.6%
450nmR1=13.3%R2= 14.8%
475nmR1=13.4%R2= 14.8%
500nmR1=13.3%R2= 14.5%
525nmR1=13.1%R2= 14.3%
550nmR1=13.2%R2= 14.5%
575nmR1=13.4%R2= 14.7%
600nmR1=13.5%R2= 14.8%
625nmR1=13.6%R2= 14.9%
650nmR1=13.7%R2= 15.0%
675nmR1=13.8%R2= 15.0%
700nmR1=13.9%R2= 15.1%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 15.1%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Light gray
Internal Reflections:

Chemical Properties of AlacrániteHide


Crystallography of AlacrániteHide

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Cell Parameters:
a = 9.942 Å, b = 9.601 Å, c = 9.178 Å
β = 101.94°
a:b:c = 1.036 : 1 : 0.956
Unit Cell V:
857.1 ų
Crystals are pinacoidal, prismatic, and flattened on [100] , striated parallel [001] on {100} , other faces dull or tarnished, to 1 mm; as subhedral flattened and prismatic grains.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.89 Å(40)
5.91 Å(90)
5.11 Å(80)
4.05 Å(70)
3.291 Å(50)
3.064 Å(100)
2.950 Å(90)
Uzon caldera, Kamchatka, Russia (ICDD 42-537).

Geological EnvironmentHide

Geological Setting:
in the condensation zone of a hydrothermal Hg–Sb–As system as cement in a sandy gravel (Uzon caldera, Russia); formed
at low temperatures in a polymetallic hydrothermal deposit on a submarine seamount (Conical Seamount, Papua New Guinea).

Type Occurrence of AlacrániteHide

Place of Conservation of Type Material:
Il’menskii Preserve Museum, Miass; A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia.
Geological Setting of Type Material:
In hydrothermal As–S veins
Associated Minerals at Type Locality:

Synonyms of AlacrániteHide

Other Language Names for AlacrániteHide

Relationship of Alacránite to other SpeciesHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
3 photos of Alacránite associated with OrpimentAs2S3
2 photos of Alacránite associated with UzoniteAs4S5
1 photo of Alacránite associated with RealgarAs4S4

Related Minerals - Nickel-Strunz GroupingHide

2.FA.AnorpimentAs2S3Tric. 1 : P1
2.FA.BonazziiteAs4S4Mon. 2/m : B2/b
2.FA.05DuranusiteAs4SOrth. mmm (2/m 2/m 2/m) : Pmna
2.FA.10DimorphiteAs4S3Orth. mmm (2/m 2/m 2/m) : Pnma
2.FA.15bPararealgarAs4S4Mon. 2/m : P21/b
2.FA.15aRealgarAs4S4Mon. 2/m
2.FA.15dUM1970-18-S:AsAs4S4Mon. 2/m : B2/b
2.FA.30LaphamiteAs2Se3Mon. 2/m
2.FA.30OrpimentAs2S3Mon. 2/m
2.FA.35GetchelliteAsSbS3Mon. 2/m : P21/b
2.FA.40Wakabayashilite[(As,Sb)6S9][As4S5]Orth. mm2 : Pna21

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

3.7.2DuranusiteAs4SOrth. mmm (2/m 2/m 2/m) : Pmna
3.7.3DimorphiteAs4S3Orth. mmm (2/m 2/m 2/m) : Pnma
3.7.4RealgarAs4S4Mon. 2/m
3.7.5PararealgarAs4S4Mon. 2/m : P21/b
3.7.8OrpimentAs2S3Mon. 2/m
3.7.10LaphamiteAs2Se3Mon. 2/m
3.7.11GetchelliteAsSbS3Mon. 2/m : P21/b
3.7.12Wakabayashilite[(As,Sb)6S9][As4S5]Orth. mm2 : Pna21
3.7.13PääkköneniteSb2AsS2Mon. 2/m : B2/m
3.7.14StibniteSb2S3Orth. mmm (2/m 2/m 2/m)
3.7.17BismuthiniteBi2S3Orth. mmm (2/m 2/m 2/m)
3.7.19GuanajuatiteBi2Se3Orth. mmm (2/m 2/m 2/m) : Pnma
3.7.22LaitakariteBi4Se2STrig. 3m : R3m
3.7.26TsumoiteBiTeTrig. 3m (3 2/m) : P3 1m
3.7.27PilseniteBi4Te3Trig. 3m (3 2/m) : R3m
3.7.28HedleyiteBi7Te3Trig. 3m (3 2/m) : R3m
3.7.29TetradymiteBi2Te2STrig. 3m (3 2/m) : R3m
3.7.30JoséiteBi4TeS2Trig. 3m (3 2/m) : R3m
3.7.31Joséite-BBi4Te2STrig. 3m (3 2/m) : R3m
3.7.40JunoiteCu2Pb3Bi8(S,Se)16Mon. 2/m : B2/m

Other InformationHide

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

References for AlacrániteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Popova, V.I., Popov, V.A., Clark, A., Polyakov, V.O., Borisovskii, S.E. (1986) Alacránite, As8S9–a new mineral. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 115(3): 360-368.
Hawthorne, F.C., Burke, E.A.J., Ercit, T.S., Grew, E.S., Grice, J.D., Jambor, J.L., Puziewicz, J., Roberts, A.C., Vanko, D.A. (1988) New mineral names. American Mineralogist: 73: 189.
Burns, P.C., Percival, J.B. (2001) Alacranite, As4S4: A new occurrence, new formula, and determination of the crystal structure. The Canadian Mineralogist: 39: 809-818.
Bonazzi, P., Bindi, L., Popova, V., Pratesi, G., Menchetti, S. (2003) Alacranite, As8S9: Structural study of the holotype and re-assignment of the original chemical formula. American Mineralogist: 88: 1796-1800.
Mineralogical Record 39: 132.
Szakáll, S. (2006) Postmagmatic alacranite (?) from the Ciomadu area, south Harghita, Romania. Acta Mineralogica-Petrographica, Abstract Series 5, Szeged, 114. []
Bonazzi, P., Bindi, L. (2008) A crystallographic review of arsenic sulfides: Effects of chemical variations and changes induced by exposure to light. Zeitschrift für Kristallographie: 223: 132-147.
Pratesi, G., Zoppi, M. (2015) An insight into the inverse transformation of realgar altered by light. American Mineralogist: 100: 1222-1229.

Internet Links for AlacrániteHide

Localities for AlacrániteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
  • Haskovo Province
    • Madzharovo Municipality
Miadenova, V. (2000). Alacranite and Duranusite from Mareshnitsa Occurrence, Eastern Rhodopes---New Minerals for Bulgaria. Comptes Rendus de l'Academie Bulgare des Sciences, 53(4), 67.
Chile (TL)
  • Atacama
    • Copiapó Province
      • Tierra Amarilla
        • Pampa Larga mining district
          • Alacrán
Clark, A.H. (1970): Alpha-arsenic sulfide, from Mina Alacrán, Pampa Larga, Chile. Am. Mineral. 55, 1338-1344; [Clark, 1993 - "Hey's Mineral Index, 3rd Edition"]
Czech Republic
  • Central Bohemian Region
    • Kutná Hora District
      • Poličany
        • Vrchlice river valley
Pauliš P. Mineralogické lokality okolí Kutné Hory. Kuttna, Kutná Hora 1999. ISBN 80-902719-0-1.
  • Hradec Králové Region
    • Trutnov District
      • Radvanice
Žáček, V., Ondruš, P.: Mineralogy of recently formed sublimates from Kateřina colliery in Radvanice, Eastern Bohemia, Czech Republic. Bulletin of the Czech geological survey, 1998, vol. 73, no. 2, s. 289-302.
  • Karlovy Vary Region
    • Sokolov District
Scharm B., Kuhn P., Kocián J.: Minerály arzénu v terciéru sokolovské pánve. In Nerostné surovinové zdroje, vědecká konference, sekce 2 - geologie, 1975, 62-67.
  • Baden-Württemberg
    • Freiburg Region
      • Rottweil
        • Schenkenzell
          • Wittichen
            • Böckelsbach valley
Walenta: "Die Mineralien des Schwarzwaldes", Weise (Munich), 1992
            • Burgfelsen
No reference listed
            • Heubach Valley
No reference listed
    • Karlsruhe Region
      • Freudenstadt
        • Alpirsbach
          • Reinerzau mining district
Walenta, K. (1992) Die Mineralien des Schwarzwaldes und ihre Fundstellan. Christian Weise Verlag, München, 336 pages [in German].
  • North Rhine-Westphalia
    • Arnsberg
      • Siegen-Wittgenstein
        • Siegen
          • Eisern
Wittern: "Mineralfundorte in Deutschland", 2001
  • Saxony
    • Sächsische Schweiz-Osterzgebirge
      • Bannewitz
        • Hänichen
Thalheim, K.; Reichel, W. & Witzke, T. (1991): Die Minerale des Döhlener Beckens.- Schriften des Staatlichen Museums für Mineralogie und Geologie zu Dresden, Nr. 3
        • Possendorf
  • Thuringia
    • Greiz District
      • Berga/Elster
        • Culmitzsch
T. Witzke & F. Rüger: Lapis 1998(7/8), 26-64
  • Campania
    • Naples
      • Pozzuoli
        • Solfatara di Pozzuoli
- Russo, M., Campostrini, I., Demartin, F. (2017): I minerali di origine fumarolica dei Campi Flegrei: Solfatara di Pozzuoli (Napoli) e dintorni. Micro, 15, 122-192.
  • Gunma Prefecture
The Mineral Species of Japan (5th ed) Matsubara; 松原聰, & 宮脇律郎. (2005). 群馬県西ノ牧鉱山産パラ鶏冠石とアラクラン石. Bulletin of the National Science Museum. Series C, Geology & paleontology, 31, 1-6.
  • Batken Region
Bindi, L., Pratesi, G., Muniz-Miranda, M., Zoppi, M., Chelazzi, L., Lepore, G. O., & Menchetti, S. (2015). From ancient pigments to modern optoelectronic applications of arsenic sulfides: bonazziite, the natural analogue of β-As4S4 from Khaidarkan deposit, Kyrgyzstan. Mineralogical Magazine, 79(1), 121-131.
Papua New Guinea
  • New Ireland Province
    • Lihir Island area
Can Min 39 (3), 2001, 809-818; Petersen, S., Herzig, P. M., Hannington, M. D., Jonasson, I. R., & Arribas, A. (2002). Submarine gold mineralization near Lihir Island, New Ireland fore-arc, Papua New Guinea. Economic Geology, 97(8), 1795-1813.
  • Harghita
Szakáll, S. (2006): Postmagmatic alacranite (?) from the Ciomadu area, south Harghita, Romania. Acta Mineralogica-Petrographica, Abstract Series 5, Szeged, 114.]; Kristály, F. & Szakáll, S. (2009): Mitt. Österr. Mineral. Ges. 155, 94. (Abs.)
Russia (TL)
  • Kamchatka Krai
ZVMO,(1986) 115, 360-368; Bonazzi, P., Bindi, L., Popova, V., Pratesi, G. & Menchetti, S. (2003): Alacranite, As8S9: Structural study of the holotype and re-assignment of the original chemical formula. American Mineralogist 88, 1796-1800.
Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
矿物 and/or 产地  
版权所有© mindat.org1993年至2020年,除了规定的地方。 Mindat.org全赖于全球数千个以上成员和支持者们的参与。
隐私政策 - 条款和条款细则 - 联络我们 Current server date and time: 2020.9.21 20:55:14 Page generated: 2020.8.13 00:42:50
Go to top of page