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Romanorlovite
A valid IMA mineral species
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About Romanorlovite
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 Identifiers
Mindat ID:
46113
Long-form identifier:
mindat:1:1:46113:7
IMA Classification of Romanorlovite
Approved
IMA Formula:
K11Cu2+9Cl25(OH)4·2H2O
Approval year:
2014
First published:
2017
Type description 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
Classification of Romanorlovite
3.DA.80
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Ror | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Romanorlovite
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 Romanorlovite
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.
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.
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 Romanorlovite
Mindat Formula:
K8Cu6Cl17(OH)3
Element Weights:
Crystallography of Romanorlovite
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 Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 12.48 Å | (56) |
| 11.74 Å | (36) |
| 8.80 Å | (100) |
| 7.97 Å | (34) |
| 6.71 Å | (40) |
| 3.165 Å | (32) |
| 2.933 Å | (80) |
| 2.607 Å | (38) |
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
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45b : [Other oxidized fumarolic minerals] |
Type Occurrence of Romanorlovite
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:
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 Romanorlovite
Other Language Names for Romanorlovite
Dutch:Romanorloviet
German:Romanorlovit
Common Associates
Related Minerals - Strunz-mindat Grouping
| 3.DA. | Parahibbingite | Fe2(OH)3Cl |
| 3.DA. | Centennialite | CaCu3Cl2(OH)6 · nH2O (n ~ 0.7) |
| 3.DA. | Bounahasite | Cu+Cu2+2(OH)3Cl2 |
| 3.DA. | Muonionalustaite | Ni3(OH)4Cl2 · 4H2O |
| 3.DA.05 | Melanothallite | Cu2Cl2O |
| 3.DA.10c | Haydeeite | Cu3Mg(OH)6Cl2 |
| 3.DA.10b | Clinoatacamite | Cu2(OH)3Cl |
| 3.DA.10c | Paratacamite | Cu3(Cu,Zn)(OH)6Cl2 |
| 3.DA.10c | Kapellasite | Cu3Zn(OH)6Cl2 |
| 3.DA.10c | Leverettite | Cu3Co(OH)6Cl2 |
| 3.DA.10a | Hibbingite | Fe2+2(OH)3Cl |
| 3.DA.10c | Paratacamite-(Ni) | Cu3(Ni,Cu)(OH)6Cl2 |
| 3.DA.10a | Kempite | Mn2+2(OH)3Cl |
| 3.DA.10c | Tondiite | Cu3Mg(OH)6Cl2 |
| 3.DA.10a | Atacamite | Cu2(OH)3Cl |
| 3.DA.10b | Belloite | Cu(OH)Cl |
| 3.DA.10c | Misakiite | Cu3Mn(OH)6Cl2 |
| 3.DA.10b | Iyoite | MnCuCl(OH)3 |
| 3.DA.10c | Kuliginite | Fe3Mg(OH)6Cl2 |
| 3.DA.10c | Gillardite | Cu3Ni(OH)6Cl2 |
| 3.DA.10b | 'Unnamed (Cu-Zn Chloride Hydroxide)' | CuZnCl(OH)3 |
| 3.DA.10b | Botallackite | Cu2(OH)3Cl |
| 3.DA.10c | Herbertsmithite | Cu3Zn(OH)6Cl2 |
| 3.DA.15 | Claringbullite | Cu4ClF(OH)6 |
| 3.DA.15 | Barlowite | Cu4BrF(OH)6 |
| 3.DA.20 | Simonkolleite | Zn5Cl2(OH)8 · H2O |
| 3.DA.25 | Buttgenbachite | Cu19(NO3)2(OH)32Cl4 · 2H2O |
| 3.DA.25 | Connellite | Cu19(SO4)(OH)32Cl4 · 3H2O |
| 3.DA.30 | Abhurite | Sn21Cl16(OH)14O6 |
| 3.DA.35 | Ponomarevite | K4Cu4Cl10O |
| 3.DA.40 | Calumetite | CaCu4(OH)8Cl2 · 3.5H2O |
| 3.DA.40 | Anthonyite | Cu(OH,Cl)2 · 3H2O |
| 3.DA.45 | Khaidarkanite | Cu4Al3(OH)14F3 · 2H2O |
| 3.DA.50 | Bobkingite | Cu5Cl2(OH)8 · 2H2O |
| 3.DA.55 | Avdoninite | K2Cu5(OH)4Cl8 · H2O |
| 3.DA.60 | Droninoite | Ni6Fe3+2(OH)16Cl2 · 4H2O |
| 3.DA.70 | Chrysothallite | K6Cu6Tl3+Cl17(OH)4 · H2O |
| 3.DA.70 | Dioskouriite | CaCu4Cl6(OH)4 · 4H2O |
| 3.DA.75 | Feodosiyite | Cu11Mg2Cl18(OH)8 · 16H2O |
Radioactivity
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: –
| Distance | Dose rate | Risk |
|---|---|---|
| 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 Information
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 Romanorlovite
mindat.org URL:
https://www.mindat.org/min-46113.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Romanorlovite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) New minerals and nomenclature modifications approved in 2014, CNMNC Newsletter No 20. Mineralogical Magazine, 78 (3) 549-558 doi:10.1180/minmag.2014.078.3.05
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
Localities for Romanorlovite
Showing 1 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Williams et al. (2014) +2 other references |
Quick NavTopAbout RomanorloviteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatRadioactivityOther InformationInternet Links References Localities Locality List
Glavnaya Tenoritovaya fumarole, Second scoria cone, Northern Breakthrough, Great Fissure eruption, Tolbachik Volcanic field, Milkovsky District, Kamchatka Krai, Russia