Mindat Logo

Miargyrite

This page is currently not sponsored. Click here to sponsor this page.



Formula:
AgSbS
 
2
System:MonoclinicColour:Black with dark red ...
Hardness:
Name:From Greek "meion" (less) and "argyros" (silver), for it contains less silver than pyrargyrite which it was often mistaken for.
Polymorph of:Baumstarkite, Cuboargyrite


The monoclinic dimorph of Cuboargyrite and Baumstarkite.

Black blocky, often striated crystals with dark red internal reflections to a cm. The crystals are difficult to orient and often form balls to a few cm.

Classification of Miargyrite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:2/C.16-10
Nickel-Strunz 10th (pending) edition ID:2.HA.10

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
A : With Cu, Ag, Fe (without Pb)
Dana 8th edition ID:3.7.3.2

3 : SULFOSALTS
7 : ø = 2
Hey's CIM Ref.:5.2.8

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
2 : Sulpharsenites etc. of Ag
mindat.org URL:http://www.mindat.org/min-2702.html
Please feel free to link to this page.

Type Occurrence of Miargyrite

Type Locality:Neue Hoffnung Gottes Mine, Bräunsdorf, Freiberg District, Erzgebirge, Saxony, Germany
Year of Discovery:1824

Physical Properties of Miargyrite

Lustre:Metallic
Colour:Black with dark red internal reflections
Streak:Cherry red
Hardness (Mohs):
Hardness Data:Measured
Cleavage:Imperfect/Fair
Imperfect on 010, rare on 100 and 101
Fracture:Sub-Conchoidal
Density (measured):5.25 g/cm3
Density (calculated):5.29 g/cm3

Crystallography of Miargyrite

Crystal System:Monoclinic
Class (H-M):m - Domatic
Space Group:Bb {B1 1b} {Cc} {C1c1}
Cell Parameters:a = 13.22Å, b = 4.411Å, c = 12.862Å
β = 98.633°
Ratio:a:b:c = 2.997 : 1 : 2.916
Unit Cell Volume:V 741.53 ų (Calculated from Unit Cell)
Morphology:Black blocky often striated xls.
Crystal Atlas:
Image Loading
Click on an icon to view
Miargyrite - {100}, {010}, {001}, modified
Miargyrite - equant crystal

About Crystal Atlas

The mindat.org Crystal Atlas allows you to view a selection of crystal drawings of real and idealised crystal forms for this mineral and, in certain cases, 3d rotating crystal objects. The 3d models and HTML5 code are kindly provided by www.smorf.nl.

Toggle
Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation

Optical Data of Miargyrite

Type:Biaxial (+)
RI values: nα = 2.720 - 2.800
Maximum Birefringence:δ = 2.720

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

Chemical Properties of Miargyrite

Formula:
AgSbS
 
2
Simplified for copy/paste:AgSbS2
Essential elements:Ag, S, Sb
All elements listed in formula:Ag, S, Sb
Empirical Formula:
AgSbS
 
2
Common Impurities:As,Fe

Relationship of Miargyrite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
2.HA.05Chalcostibite
CuSbS
 
2
2.HA.05Emplectite
CuBiS
 
2
2.HA.20Berthierite
FeSb
 
2
S
 
4
2.HA.20Garavellite
FeSbBiS
 
4
2.HA.20Clerite
MnSb
 
2
S
 
4
2.HA.25Aramayoite
Ag(Sb,Bi)S
 
2
2.HA.25Baumstarkite
AgSbS
 
2
Related Minerals - Hey's Index Grouping:

- +
5.2.1Smithite
AgAsS
 
2
5.2.2Trechmannite
AgAsS
 
2
5.2.3Proustite
Ag
 
3
AsS
 
3
5.2.4Xanthoconite
Ag
 
3
AsS
 
3
5.2.5Pearceite
[(Ag,Cu)
 
6
(As,Sb)
 
2
S
 
7
][Ag
 
9
CuS
 
4
]
5.2.6Pearceite-T2ac
5.2.7Argentotennantite
Ag
 
6
[Cu
 
4
(Fe,Zn)
 
2
]As
 
4
S
 
13
5.2.9Pyrargyrite
Ag
 
3
SbS
 
3
5.2.10Pyrostilpnite
Ag
 
3
SbS
 
3
5.2.11Stephanite
Ag
 
5
SbS
 
4
5.2.12Polybasite
[(Ag,Cu)
 
6
(Sb,As)
 
2
S
 
7
][Ag
 
9
CuS
 
4
]
5.2.13Billingsleyite
Ag
 
7
AsS
 
6
5.2.14Polybasite-Tac
5.2.15Freibergite
Ag
 
6
[Cu
 
4
Fe
 
2
]Sb
 
4
S
 
13-x
5.2.16Aramayoite
Ag(Sb,Bi)S
 
2
5.2.17Matildite
AgBiS
 
2
5.2.18Schapbachite
Ag
 
0.4
Pb
 
0.2
Bi
 
0.4
S
5.2.19Pavonite
(Ag,Cu)(Bi,Pb)
 
3
S
 
5
5.2.20Arcubisite
Ag
 
6
CuBiS
 
4
5.2.21Bohdanowiczite
AgBiSe
 
2
5.2.22Selenostephanite
Ag
 
5
Sb(Se,S)
 
4
5.2.23Benleonardite
Ag
 
8
(Sb,As)Te
 
2
S
 
3
5.2.24Volynskite
AgBiTe
 
2

Other Names for Miargyrite

Synonyms:
Fahles RotgiltigerzHypargyriteHypargyron-BlendeKenngottite (of Haidinger)Myargyrite
Other Languages:
German:Hemidom-Blende
Hemiprismatische Rubin-Blende
Miargyrit
Myargyrit
Silberantimonglanz
Russian:Миаргирит
Simplified Chinese:辉锑银矿
Spanish:Miargyrita
Myargyrita
Varieties:
Arsenmiargyrite

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 Miargyrite

Reference List:

- +
Hausmann (1805), Hercyn. Archiv: 4: 680.

Mohs, F. (1824): Hemiprismatische Rubinblende.- Grundriss der Mineralogie, vol. II, p. 606-607.

Rose, H. (1829): Ueber die in der Natur vorkommenden nicht oxydirten Verbindungen des Antimons und des Arseniks.- Poggendorffs Annalen der Physik und Chemie 15, 451-476.

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 424-427.

Mineralogical Magazine (1997): 61: 671-675.

Effenberger, H., Paar, W.H., Topa, D., Criddle, A.J., and Fleck, M. (2002) The new mineal baumstarkite and a structural reinvestigation of aramayoite and miargyrite. American Mineralogist: 87: 753-764.

Acta Crystallographica: 17: 847-851.

Internet Links for Miargyrite

Search Engines:
  • Look for Miargyrite on Google
  • Look for Miargyrite images on Google
  • External Links:
  • Look for Miargyrite on Webmineral
  • Look for Miargyrite on Athena Mineralogy
  • Look for Miargyrite on Wikipedia
  • Look for Miargyrite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Miargyrite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Fabre Minerals - search for Miargyrite specimens
  • High-end worldwide specimens & outstanding customer service
  • Miargyrite specimens for sale - minfind.com
  • Lapis Mineral Magazin
  • Top quality minerals from Kristalle of California
  • Buy fine minerals and gemstones from Pala International
  • Buy minerals from YourMineralCollection
  • Buy from David K Joyce minerals
  • Search for Miargyrite on Well-Arranged Molecules
  • SpiriferMinerals.com - high quality low prices
  • Buy from McDougall Minerals
  • Fine minerals from bisbeeborn.com
  • Specimens:The following Miargyrite specimens are currently listed for sale on minfind.com.

    Localities for Miargyrite

    The 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.
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: July 3, 2014 03:46:00
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds