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Shilovite

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About ShiloviteHide

Alexander E. Shilov
Formula:
Cu(NH3)4(NO3)2
Colour:
Deep violet blue
Lustre:
Vitreous
Hardness:
2
Specific Gravity:
1.92 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Alexander Evgen’evich Shilov (Александр Евгеньевич Шилов) (6 January 1930, Ivanovo-Voznesensk, USSR - 6 June 2014, Chernogolovka, Moscow Region, Russia), chemist, professors, Academician of the Russian Academy of Sciences, and a specialist in biomimetics and the chemistry of nitrogen.
The first natural tetrammine copper complex.
Supergene mineral formed in the contact zone between a deeply altered guano deposit and chalcopyrite-bearing gabbro. Guano was the source of nitrogen and oxidized chalcopyrite was the source of Cu.

Chemically (in terms of elements) similar to other copper nitrates: gerhardtite, likasite, and rouaite.


Classification of ShiloviteHide

Approved
Approval Year:
2014

Physical Properties of ShiloviteHide

Vitreous
Transparency:
Translucent
Colour:
Deep violet blue
Streak:
violet blue and becomes light blue as a result of decomposition and loss of NH3
Hardness:
Hardness Data:
Measured
Tenacity:
Sectile
Cleavage:
None Observed
Density:
1.92 g/cm3 (Calculated)

Optical Data of ShiloviteHide

Type:
Biaxial (+)
RI values:
nα = 1.527(2) nβ = 1.545(5) nγ = 1.610(2)
2V:
Measured: 40° to 50°, Calculated: 57°
Max Birefringence:
δ = 0.083
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Low

Chemical Properties of ShiloviteHide

Formula:
Cu(NH3)4(NO3)2
Common Impurities:
Fe

Crystallography of ShiloviteHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Pnn2
Setting:
Pnn2
Cell Parameters:
a = 23.6585(9) Å, b = 10.8238(4) Å, c = 6.9054(3) Å
Ratio:
a:b:c = 2.186 : 1 : 0.638
Unit Cell V:
1768.3 ų
Z:
8
Morphology:
Thick tabular to equant crystals up to 0.15 mm in size.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.931(41)
5.841(100)
5.208(47)
4.162(88)
4.005(62)
3.462(50)
3.207(32)
2.881(40)
Comments:
From Type Description.

Type Occurrence of ShiloviteHide

General Appearance of Type Material:
Imperfect, thick tabular to equant crystals up to 0.15 mm in size included in massive halite.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4542/1
Geological Setting of Type Material:
Guano deposit hosted in a chalcopyrite bearing gabbro.
Associated Minerals at Type Locality:

Synonyms of ShiloviteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Ammineite2 photos of Shilovite associated with Ammineite on mindat.org.

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 ShiloviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chukanov, N.V., Britvin, S.N., Möhn, G., Pekov, I.V., Zubkova, N.V., Nestola, F., Kasatkin, A.V. and Dini, M. (2014) Shilovite, IMA 2014-016. CNMNC Newsletter No. 21, August 2014, page 798; Mineralogical Magazine: 78: 797-804.
Chukanov, N.V., Britvin, S.N., Möhn, G., Pekov, I.V., Zubkova, N.V., Nestola, F., Kasatkin, A.V., Dini, M. (2015) Shilovite, natural copper(II) tetrammine nitrate, a new mineral species. Mineralogical Magazine: 79: 613-623.

Internet Links for ShiloviteHide

Localities for ShiloviteHide

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.
Chile (TL)
 
  • Tarapacá Region
    • Iquique Province
      • Chanabaya
Chukanov, N.V., Britvin, S.N., Mo¨hn, G., Pekov, I.V., Zubkova, N.V., Nestola, F., Kasatkin, A.V. and Dini, M. (2014) Shilovite, IMA 2014-016. CNMNC Newsletter No. 21, August 2014, page 798; Mineralogical Magazine, 78, 797-804.; Chukanov, N.V., Britvin, S.N., Möhn, G., Pekov, I.V., Zubkova, N.V., Nestola, F., Kasatkin, A.V., Dini, M. (2015): Shilovite, natural copper(II) tetrammine nitrate, a new mineral species. Mineralogical Magazine, 79, 613-623.
Mineral and/or Locality  
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