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Romanorlovite

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About RomanorloviteHide

Formula:
K8Cu6Cl17(OH)3
Colour:
yellow-brown to dark brown; tiny crystals are honey- or golden-yellow
Lustre:
Vitreous
Hardness:
3
Specific Gravity:
2.755 (Calculated)
Crystal System:
Tetragonal
Name:
Named in honor of Roman Yu. Orlov (1929-2005), Russian mineralogist and physicist, Department of Mineralogy, Moscow State University.
This page provides mineralogical data about Romanorlovite.


Classification of RomanorloviteHide

Approved, Pending publication
Approval Year:
2014
First Published:
2017

Physical Properties of RomanorloviteHide

Vitreous
Transparency:
Transparent
Colour:
yellow-brown to dark brown; tiny crystals are honey- or golden-yellow
Hardness:
Tenacity:
Brittle
Cleavage:
None Observed
Density:
2.755 g/cm3 (Calculated)

Optical Data of RomanorloviteHide

Type:
Uniaxial (-)
RI values:
nω = 1.727 nε = 1.694
Max Birefringence:
δ = 0.033
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of RomanorloviteHide

Formula:
K8Cu6Cl17(OH)3
IMA Formula:
K11Cu9Cl25(OH)4 · 2H2O

Crystallography of RomanorloviteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I4/mmm
Setting:
I4/mmm
Cell Parameters:
a = 17.5804(7) Å, c = 15.9075(6) Å
Ratio:
a:c = 1 : 0.905
Unit Cell V:
4,916.54 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
12.48(56)
11.74(36)
8.80(100)
7.97(34)
6.71(40)
3.165(32)
2.933(80)
2.607(38)
Comments:
From Type Description.

Type Occurrence of RomanorloviteHide

General Appearance of Type Material:
Prismatic, equant, or tabular tetragonal crystals up to 0.1 mm, clusters up to 0.5 mm, and crusts up to 2×2 mm in area.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Moscow, Russia, registration number 4544/1
Geological Setting of Type Material:
Upper, moderately hot zone, of fumarole.
Reference:
Pekov, I.V., Yapaskurt, V.O., Britvin, S.N., Vigasina, M.F., Lykova, I.S., Zubkova, N.V., Krivovichev, S.V., Sidorov, E.G. (2017) Romanorlovite, a New Copper and Potassium Hydroxychloride from the Tolbachik Volcano, Kamchatka, Russia. Geology of Ore Deposits: 59(7): 601–608.

Synonyms of RomanorloviteHide

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 RomanorloviteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Britvin, S.N., Vigasina, M.F., Lykova, I.S., Sidorov, E.G., Pushcharovsky, D.Y. (2014) Romanorlovite, IMA 2014-011. CNMNC Newsletter No. 20, June 2014, page 557; Mineralogical Magazine: 78: 549-558.
Pekov, I.V., Yapaskurt, V.O., Britvin, S.N., Vigasina, M.F., Lykova, I.S., Zubkova, N.V., Krivovichev, S.V., Sidorov, E.G. (2017) Romanorlovite, a New Copper and Potassium Hydroxychloride from the Tolbachik Volcano, Kamchatka, Russia. Geology of Ore Deposits: 59(7): 601–608.

Internet Links for RomanorloviteHide

Localities for RomanorloviteHide

ⓘ - 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.
Russia (TL)
 
  • Kamchatka Krai
    • Tolbachik volcano
      • Great Fissure eruption (Main Fracture)
        • Northern Breakthrough (North Breach)
          • Second scoria cone
Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Britvin, S.N., Vigasina, M.F., Lykova, I.S., Sidorov, E.G. and Pushcharovsky, D.Y. (2014) Romanorlovite, IMA 2014-011. CNMNC Newsletter No. 20, June 2014, page 557; Mineralogical Magazine, 78, 549-558.
Mineral and/or Locality  
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