Miassite (original) (raw)

A valid IMA mineral species

About MiassiteHide

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Specific Gravity:

7.42 (Calculated)

Name:

After the type locality.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:7250:8

8c879fda-a5d2-40b5-ac82-be793a90e46a

IMA Classification of MiassiteHide

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Type description reference:

Britvin, S. N., Rudashevsky, N. S., Bogdanova, A. N., Shcherbachev, D. K. (2001) Miassite Rh17S15, a new mineral from a placier of Miass River, Urals. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 130 (2) 41-45

Classification of MiassiteHide

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2.BC.05

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
B : Metal Sulfides, M: S > 1: 1 (mainly 2: 1)
C : With Rh, Pd, Pt, etc.

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 MiassiteHide

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Hardness:

VHN10=724 - 736 kg/mm2 - Vickers

Density:

7.42 g/cm3 (Calculated)

Optical Data of MiassiteHide

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Colour in reflected light:

Light gray with a bluish tint

Internal Reflections:

none

Chemistry of MiassiteHide

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Crystallography of MiassiteHide

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Class (H-M):

m_3_m _(_4/_m_32/m ) - Hexoctahedral

Cell Parameters:

a = 10.024(5) Å

Unit Cell V:

1,007.22 ų (Calculated from Unit Cell)

Comment:

Space group probable

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of MiassiteHide

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General Appearance of Type Material:

rounded inclusions to 100 µm.

Place of Conservation of Type Material:

Mining Museum, Saint Petersburg Mining Institute, Russia (3073/2).

Geological Setting of Type Material:

fluvial placer deposits derived from ophiolites or layered mafic intrusions

Associated Minerals at Type Locality:

Reference:

Britvin S N, Rudashevsky N S, Bogdanova A N, Shcherbachev D K (2001) Miassite Rh17S15, a new mineral from a placier of Miass River, Urals. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva 130, issue 2, 41-45

Synonyms of MiassiteHide

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Other Language Names for MiassiteHide

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Simplified Chinese:密硫铑矿

Traditional Chinese:密硫銠礦

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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Electrical:

Solid state chemistry has produced a plethora of materials with properties not found in nature. For example, high-temperature superconductivity in cuprates is drastically different from the superconductivity of naturally occurring metals and alloys and is frequently referred to as unconventional. Unconventional superconductivity is also found in other synthetic compounds, such as iron-based and heavy-fermion superconductors. Here, we report compelling evidence of unconventional nodal superconductivity in synthetic samples of Rh17S15 (Tc = 5.4 K), which is also found in nature as the mineral miassite. We investigated the temperature-dependent variation of the London penetration depth Δλ(T) and the disorder evolution of the critical superconducting temperature Tc and the upper critical field Hc2(T) in single crystalline Rh17S15. We found a T − linear temperature variation of Δλ(T) below 0.3Tc, which is consistent with the presence of nodal lines in the superconducting gap of Rh17S15. The nodal character of the superconducting state is supported by the observed suppression of Tc and Hc2(T) in samples with a controlled level of non-magnetic disorder introduced by 2.5 MeV electron irradiation. We propose a nodal sign-changing superconducting gap in the A1g irreducible representation, which preserves the cubic symmetry of the crystal and is in excellent agreement with the derived superfluid density. To the best of our knowledge, this establishes miassite as the only mineral known so far that reveals unconventional superconductivity in its clean synthetic form, though it is unlikely that it is present in natural crystals because of unavoidable impurities that quickly destroy nodal superconductivity.

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 MiassiteHide

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References for MiassiteHide

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Reference List:

Britvin, S. N., Rudashevsky, N. S., Bogdanova, A. N., Shcherbachev, D. K. (2001) Miassite Rh17S15, a new mineral from a placier of Miass River, Urals. Zapiski Vserossijskogo Mineralogicheskogo Obshchestva, 130 (2) 41-45

[1]Kim, Hyunsoo, Tanatar, Makariy A., Kończykowski, Marcin, Grasset, Romain, Kaluarachchi, Udhara S., Teknowijoyo, Serafim, Cho, Kyuil, Sapkota, Aashish, Wilde, John M., Krogstad, Matthew J., Bud’ko, Sergey L., Brydon, Philip M. R., Canfield, Paul C., Prozorov, Ruslan (2024) Nodal superconductivity in miassite Rh17S15. Communications Materials, 5 (1) 17 doi:10.1038/s43246-024-00456-w

Localities for MiassiteHide

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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.