SUPPORT US. Covid-19 has significantly affected our fundraising. Please help!
Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral Quiz
Photo SearchPhoto GalleriesSearch by ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Hermannjahnite

This page is currently not sponsored. Click here to sponsor this page.
03655350015800897181164.jpg
Hermann A. Jahn
Formula:
CuZn(SO4)2
Colour:
white or colourless, sometimes with light greyish, yellowish, greenish or bluish tints
Lustre:
Vitreous
Specific Gravity:
3.74 (Calculated)
Crystal System:
Monoclinic
Name:
Named in honor of Hermann Arthur Jahn (31 May 1907, Colchester, England - 24 October 1979 Southampton, England), mathematical physicist at the Royal Institution and later the University College, Southampton. With Edward Teller, he identified the Jahn–Teller effect, a geometrical distortion of molecules and ions that result from certain electron configurations. It is responsible for a variety of phenomena in spectroscopy and solid-state physics. The Jahn-Teller effect is pronounced in the structure of hermannjahnite.
The Zn analogue of dravertite. Chemically somewhat similar to christelite and ktenasite, that are hydrated phases.

The structure of hermannjahnite is isotypic to that of dravertite, CuMg(SO4)2, and represents a monoclinically distorted chalcocyanite CuSO4 structure.


Hide all sections | Show all sections

Classification of HermannjahniteHide

Approved
Approval Year:
2015
First Published:
2017

Physical Properties of HermannjahniteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
white or colourless, sometimes with light greyish, yellowish, greenish or bluish tints
Streak:
white
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
none
Fracture:
Irregular/Uneven
Density:
3.74 g/cm3 (Calculated)

Optical Data of HermannjahniteHide

Type:
Biaxial (+)
RI values:
nα = 1.642(2) nβ = 1.652(2) nγ = 1.675(2)
2V:
Calculated: 67.6°
Max Birefringence:
δ = 0.033
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Non-pleochroic

Chemical Properties of HermannjahniteHide

Formula:
CuZn(SO4)2

Crystallography of HermannjahniteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 4.8076(2) Å, b = 8.4785(3) Å, c = 6.7648(3) Å
β = 93.041(3)°
Ratio:
a:b:c = 0.567 : 1 : 0.798
Unit Cell V:
275.35 ų
Z:
2
Comment:
Space group P21/n.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.231 Å(31)
4.177 Å(100)
3.630 Å(72)
3.486 Å(25)
2.681 Å(29)
2.648 Å(69)
2.561 Å(29)
2.428 Å(63)

Geological EnvironmentHide

Paragenetic Mode(s):
•  Fumarolic

Type Occurrence of HermannjahniteHide

General Appearance of Type Material:
isometric anhedral grains up to 0.05 mm across with massive aggregates or crusts up to 2 × 2 mm on basaltic scoria.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Mineralogical Museum, Department of Mineralogy, St Petersburg State University, St Petersburg, Russia, specimen no. 19659.
Empirical Formula of Type Material:
Cu1.00(Zn0.43Cu0.31Mg0.250.99S2.00O8
Geological Setting of Type Material:
Sublimates of a fumarole
Associated Minerals at Type Locality:
Reference:
Siidra, O.I., Nazarchuk, E.V., Agakhanov, A.A., Lukina, E.A., Zaitsev, A.N., Turner, R., Filatov, S.K., Pekov, I.V., Karpov, G.A., Yapaskurt, V.O. (2018): Hermannjahnite, CuZn(SO4)2, a new mineral with chalcocyanite derivative structure from the Naboko scoria cone of the 2012–2013 fissure eruption at Tolbachik volcano, Kamchatka, Russia. Mineralogy and Petrology: 112: 123-134.

Synonyms of HermannjahniteHide

Other InformationHide

Notes:
Hermannjahnite is soluble in H2O at room temperature and slowly transforms into hydrate in humid air.
Special Storage/
Display Requirements:
Kept in sealed container
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 HermannjahniteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Siidra, O.I., Nazarchuk, E.V., Agakhanov, A.A., Lukina, E.A., Vergasova, L.P., Filatov, S.K., Pekov, I.V., Karpov, G.A. and Yapaskurt, V.O. (2015) Hermannjahnite, IMA 2015-050. CNMNC Newsletter No. 27, October 2015, page 1225; Mineralogical Magazine: 79: 1229–1236.
Siidra, O.I., Nazarchuk, E.V., Agakhanov, A.A., Lukina, E.A., Zaitsev, A.N., Turner, R., Filatov, S.K., Pekov, I.V., Karpov, G.A., Yapaskurt, V.O. (2018): Hermannjahnite, CuZn(SO4)2, a new mineral with chalcocyanite derivative structure from the Naboko scoria cone of the 2012–2013 fissure eruption at Tolbachik volcano, Kamchatka, Russia. Mineralogy and Petrology: 112: 123-134.

Internet Links for HermannjahniteHide

Localities for HermannjahniteHide

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

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - 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)
Siidra, O.I., Nazarchuk, E.V., Agakhanov, A.A., Lukina, E.A., Vergasova, L.P., Filatov, S.K., Pekov, I.V., Karpov, G.A. and Yapaskurt, V.O. (2015) Hermannjahnite, IMA 2015-050. CNMNC Newsletter No. 27, October 2015, page 1225; Mineralogical Magazine, 79, 1229–1236; Siidra, O.I., Nazarchuk, E.V., Agakhanov, A.A., Lukina, E.A., Zaitsev, A.N., Turner, R., Filatov, S.K., Pekov, I.V., Karpov, G.A., Yapaskurt, V.O. (2018): Hermannjahnite, CuZn(SO4)2, a new mineral with chalcocyanite derivative structure from the Naboko scoria cone of the 2012–2013 fissure eruption at Tolbachik volcano, Kamchatka, Russia. Mineralogy and Petrology: 112: 123-134.
        • Northern Breakthrough (North Breach)
          • Second scoria cone
Siidra, O.I., Nazarchuk, E.V., Agakhanov, A.A., Lukina, E.A., Zaitsev, A.N., Turner, R., Filatov, S.K., Pekov, I.V., Karpov, G.A., Yapaskurt, V.O. (2018): Hermannjahnite, CuZn(SO4)2, a new mineral with chalcocyanite derivative structure from the Naboko scoria cone of the 2012–2013 fissure eruption at Tolbachik volcano, Kamchatka, Russia. Mineralogy and Petrology: 112: 123-134.
 
Mineral and/or Locality  
Mindat Discussions Facebook Logo Instagram Logo Discord Logo
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 22, 2020 04:26:24 Page generated: October 4, 2020 20:02:40
Go to top of page