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Romanorlovite

A valid IMA mineral species
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08797810017271952172715.jpg
Romanorlovite

Glavnaya Tenoritovaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
08797810017271952172715.jpg
Romanorlovite

Glavnaya Tenoritovaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
04859640017866631541074.jpg
Romanorlovite

Glavnaya Tenoritovaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
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About RomanorloviteHide

06544400017271952183149.jpg
Roman Y. Orlov
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 Yurievich Orlov (Роман Юрьевич Орлов) (23 November 1929 - 1 January 2005), Russian mineralogist and physicist, Department of Mineralogy, Moscow State University.
This page provides mineralogical data about Romanorlovite.


Unique IdentifiersHide

Mindat ID:
46113
Long-form identifier:
mindat:1:1:46113:7

IMA Classification of RomanorloviteHide

Classification of RomanorloviteHide

Strunz-mindat (2026):
3.DA.80

3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb

Mineral SymbolsHide

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

SymbolSourceReference for Standard
RorIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of RomanorloviteHide

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

Optical Data of RomanorloviteHide

Type:
Uniaxial (-)
RI values:
nω = 1.727(3) nε = 1.694(2)
Max. Birefringence:
δ = 0.033
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.

Surface Relief:
Moderate

Chemistry of RomanorloviteHide

Mindat Formula:
K8Cu6Cl17(OH)3
Element Weights:
Element% weight
Cl44.718 %
Cu28.289 %
K23.207 %
O3.561 %
H0.224 %

Calculated from ideal end-member formula.
Elements listed:
Cl, Cu, H, K, O - search for minerals with similar chemistry

Crystallography of RomanorloviteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm(4/m2/m2/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)
Z:
4

X-Ray Powder DiffractionHide

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
45b : [Other oxidized fumarolic minerals]

Type Occurrence of RomanorloviteHide

Type Locality:
ⓘ Glavnaya Tenoritovaya fumarole (Major Tenorite), Second scoria cone, Northern Breakthrough (North Breach), Great Fissure eruption (Main Fracture), Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia
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.
Associated Minerals at Type Locality:
AvdoniniteBelloiteCarnalliteChlorothioniteChrysothallite
EriochalciteMellizinkaliteMitscherlichiteSanguiteSylvite
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 doi:10.1134/s107570151707008x

Synonyms of RomanorloviteHide

Other Language Names for RomanorloviteHide

Common AssociatesHide

Associations Based on Photo Data:
1 photo of Romanorlovite associated with SanguiteKCuCl3

Related Minerals - Strunz-mindat GroupingHide

3.DA.ParahibbingiteFe2(OH)3ClTrig. 3m(32/m) : R3m
3.DA.CentennialiteCaCu3Cl2(OH)6 · nH2O (n ~ 0.7)Trig. 3m(32/m) : P3m1
3.DA.BounahasiteCu+Cu2+2(OH)3Cl2Mon. 2/m
3.DA.MuonionalustaiteNi3(OH)4Cl2 · 4H2OMon. 2/m : B2/m
3.DA.05MelanothalliteCu2Cl2OOrth. mmm(2/m2/m2/m) : Fddd
3.DA.10cHaydeeiteCu3Mg(OH)6Cl2Trig. 3m(32/m) : P3m1
3.DA.10bClinoatacamiteCu2(OH)3ClMon. 2/m
3.DA.10cParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3 : R3
3.DA.10cKapellasiteCu3Zn(OH)6Cl2Trig. 3m(32/m) : P3m1
3.DA.10cLeverettiteCu3Co(OH)6Cl2Trig. 3 : R3
3.DA.10aHibbingiteFe2+2(OH)3ClOrth. mmm(2/m2/m2/m) : Pnma
3.DA.10cParatacamite-(Ni)Cu3(Ni,Cu)(OH)6Cl2Trig. 3 : R3
3.DA.10aKempiteMn2+2(OH)3ClOrth. mmm(2/m2/m2/m) : Pnma
3.DA.10cTondiiteCu3Mg(OH)6Cl2Trig. 3m(32/m) : R3m
3.DA.10aAtacamiteCu2(OH)3ClOrth. mmm(2/m2/m2/m) : Pnma
3.DA.10bBelloiteCu(OH)ClMon. 2/m : P21/b
3.DA.10cMisakiiteCu3Mn(OH)6Cl2Trig. 3m(32/m) : P3m1
3.DA.10bIyoiteMnCuCl(OH)3Mon. 2/m : P21/m
3.DA.10cKuliginiteFe3Mg(OH)6Cl2Trig. 3 : R3
3.DA.10cGillarditeCu3Ni(OH)6Cl2Trig. 3m(32/m) : R3m
3.DA.10b'Unnamed (Cu-Zn Chloride Hydroxide)'CuZnCl(OH)3Mon. 2/m : P21/m
3.DA.10bBotallackiteCu2(OH)3ClMon. 2/m : P21/m
3.DA.10cHerbertsmithiteCu3Zn(OH)6Cl2Trig. 3m(32/m) : R3m
3.DA.15ClaringbulliteCu4ClF(OH)6Hex. 6/mmm(6/m2/m2/m) : P63/mmc
3.DA.15BarlowiteCu4BrF(OH)6Hex. 6/mmm(6/m2/m2/m) : P63/mmc
3.DA.20SimonkolleiteZn5Cl2(OH)8 · H2OTrig. 3m(32/m) : P3m1
3.DA.25ButtgenbachiteCu19(NO3)2(OH)32Cl4 · 2H2OHex. 6/mmm(6/m2/m2/m) : P63/mmc
3.DA.25ConnelliteCu19(SO4)(OH)32Cl4 · 3H2OHex. 6m2 : P62c
3.DA.30AbhuriteSn21Cl16(OH)14O6Trig. 32 : R32
3.DA.35PonomareviteK4Cu4Cl10OMon. 2/m : B2/b
3.DA.40CalumetiteCaCu4(OH)8Cl2 · 3.5H2OOrth. mmm(2/m2/m2/m) : Cmcm
3.DA.40AnthonyiteCu(OH,Cl)2 · 3H2OMon. 2/m
3.DA.45KhaidarkaniteCu4Al3(OH)14F3 · 2H2OMon. 2/m : B2/m
3.DA.50BobkingiteCu5Cl2(OH)8 · 2H2OMon. 2/m : B2/m
3.DA.55AvdoniniteK2Cu5(OH)4Cl8 · H2OMon. 2/m : P21/b
3.DA.60DroninoiteNi6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m(32/m) : R3m
3.DA.70ChrysothalliteK6Cu6Tl3+Cl17(OH)4 · H2OTet. 4/mmm(4/m2/m2/m) : I4/mmm
3.DA.70DioskouriiteCaCu4Cl6(OH)4 · 4H2OMon. 2/m : P21/b
3.DA.75FeodosiyiteCu11Mg2Cl18(OH)8 · 16H2OMon. 2/m : P21/b

RadioactivityHide

Radioactivity:
Element % Content Activity (Bq/kg) Radiation Type
Uranium (U) 0.0000% 0 α, β, γ
Thorium (Th) 0.0000% 0 α, β, γ
Potassium (K) 23.2074% 7,194 β, γ

For comparison:

  • Banana: ~15 Bq per fruit
  • Granite: 1,000–3,000 Bq/kg
  • EU exemption limit: 10,000 Bq/kg

Note: Risk is shown relative to daily recommended maximum exposure to non-background radiation of 1000 µSv/year. Note that natural background radiation averages around 2400 µSv/year so in reality these risks are probably extremely overstated! With infrequent handling and safe storage natural radioactive minerals do not usually pose much risk.

Interactive Simulator:

Note: The mass selector refers to the mass of radioactive mineral present, not the full specimen, also be aware that the matrix may also be radioactive, possibly more radioactive than this mineral!

Activity: –

DistanceDose rateRisk
1 cm
10 cm
1 m

The external dose rate (D) from a radioactive mineral is estimated by summing the gamma radiation contributions from its Uranium, Thorium, and Potassium content, disregarding daughter-product which may have a significant effect in some cases (eg 'pitchblende'). This involves multiplying the activity (A, in Bq) of each element by its specific gamma ray constant (Γ), which accounts for its unique gamma emissions. The total unshielded dose at 1 cm is then scaled by the square of the distance (r, in cm) and multiplied by a shielding factor (μshield). This calculation provides a 'worst-case' or 'maximum risk' estimate because it assumes the sample is a point source and entirely neglects any self-shielding where radiation is absorbed within the mineral itself, meaning actual doses will typically be lower. The resulting dose rate (D) is expressed in microsieverts per hour (μSv/h).

D = ((AU × ΓU) + (ATh × ΓTh) + (AK × ΓK)) / r2 × μshield

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.

Internet Links for RomanorloviteHide

References for RomanorloviteHide

Localities for RomanorloviteHide

Showing 1 localities.

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.
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Locality ListHide

- 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.
Russia (TL)
 
  • Kamchatka Krai
    • Milkovsky District
      • Tolbachik Volcanic field
        • Great Fissure eruption (Main Fracture)
          • Northern Breakthrough (North Breach)
            • Second scoria cone
Williams et al. (2014) +2 other references
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