Shilovite (original) (raw)

A valid IMA mineral species

About ShiloviteHide

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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. Also the first ammine-nitrate mineral (compare pabellóndepicaite).
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.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:46139:5

3b415377-2f9b-432e-aea6-ec2a5d27efa4

IMA Classification of ShiloviteHide

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Classification of ShiloviteHide

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5.NA.25

5 : CARBONATES (NITRATES)
N : NITRATES
A : Without OH or H2O

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of ShiloviteHide

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Streak:

Violet blue and becomes light blue as a result of decomposition and loss of NH3

Density:

1.92 g/cm3 (Calculated)

Optical Data of ShiloviteHide

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RI values:

_n_α = 1.527(2) _n_β = 1.545(5) _n_γ = 1.610(2)

2V:

Measured: 40° to 50°, Calculated: 57°

δ = 0.083

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Chemistry of ShiloviteHide

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Mindat Formula:

Cu(NH3)4(NO3)2

Crystallography of ShiloviteHide

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Crystal System:

Orthorhombic

Class (H-M):

m _m_2 - Pyramidal

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

Morphology:

Thick tabular to equant crystals up to 0.15 mm in size.

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

From Type Description.

Geological EnvironmentHide

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Type Occurrence of ShiloviteHide

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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

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Other InformationHide

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Health Risks:

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

Internet Links for ShiloviteHide

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References for ShiloviteHide

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Reference List:

Chukanov, Nikita V., Britvin, Sergey N., Möhn, Gerhard, Pekov, Igor V., Zubkova, Natalia V., Nestola, Fabrizio, Kasatkin, Anatoly V., Dini, Maurizio (2015) Shilovite, natural copper(II) tetrammine nitrate, a new mineral species. Mineralogical Magazine, 79 (3) 613-623 doi:10.1180/minmag.2015.079.3.07

Localities for ShiloviteHide

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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

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.