IMPORTANT MESSAGE. We need your support now to keep mindat.org running. Click here to find out why.
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 Educators
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
StatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Tondiite

This page is currently not sponsored. Click here to sponsor this page.
Hide all sections | Show all sections

About TondiiteHide

Matteo Tondi
Formula:
Cu3Mg(OH)6Cl2
Colour:
emerald green to bright green
Lustre:
Vitreous
Hardness:
3 - 3½
Specific Gravity:
3.503 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
Tondiite is named in honour of Matteo Tondi (Dec 21, 1762- Nov. 16, 1835), eminent Italian mineralogist and collaborator of Rene J. Hauy in writing the classic Traite` de Mineralogie.

Classification of TondiiteHide

Approved
Approval Year:
2013

Physical Properties of TondiiteHide

Vitreous
Transparency:
Transparent
Colour:
emerald green to bright green
Hardness:
3 - 3½ on Mohs scale
Density:
3.503 g/cm3 (Calculated)

Optical Data of TondiiteHide

Type:
Uniaxial (+)
RI values:
nω = 1.749() nε = 1.766(7)
Max Birefringence:
δ = 0.017
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Weak
Comments:
green to faintly green.

Chemical Properties of TondiiteHide

Formula:
Cu3Mg(OH)6Cl2
IMA Formula:
Cu3MgCl2(OH)6

Crystallography of TondiiteHide

Crystal System:
Trigonal
Class (H-M):
3m (3 2/m) - Hexagonal Scalenohedral
Space Group:
R3m
Setting:
R3m
Cell Parameters:
a = 6.8377(7) Å, c = 14.088(2) Å
Ratio:
a:c = 1 : 2.06
Unit Cell V:
570.43 ų (Calculated from Unit Cell)
Comment:
R3¯ m

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.459(88)
3.419(22)
2.898(15)
2.764(100)
2.266(54)
1.820(19)
1.709(26)
1.382(13)
Comments:
From Type Description.

Type Occurrence of TondiiteHide

General Appearance of Type Material:
mm-sized vesicles in the volcanic rock
Place of Conservation of Type Material:
Type material is deposited in the collections of the Real Museo Mineralogico di Napoli (Italy) Universita` di Napoli, Napoli, Italy, catalogue number 1178R. This cotype material is preserved in the collection of the Mineralogical Museum, University of Ham
Geological Setting of Type Material:
supergene mineral in a phonolitic tephrite. 1906 erupted lavas
Associated Minerals at Type Locality:

Synonyms of TondiiteHide

Relationship of Tondiite to other SpeciesHide

Member of:
Other Members of this group:
AtacamiteCu2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
BotallackiteCu2(OH)3ClMon. 2/m : P21/m
ClinoatacamiteCu2(OH)3ClMon. 2/m
GillarditeCu3Ni(OH)6Cl2Trig. 3m (3 2/m) : R3m
HaydeeiteCu3Mg(OH)6Cl2Trig. 3m (3 2/m) : P3m1
HerbertsmithiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : R3m
HibbingiteFe2+2(OH)3ClOrth.
IyoiteMnCuCl(OH)3Mon. 2/m : P21/m
KapellasiteCu3Zn(OH)6Cl2Trig. 3m (3 2/m) : P3m1
KempiteMn2+2(OH)3ClOrth. mmm (2/m 2/m 2/m) : Pnma
LeverettiteCu3Co(OH)6Cl2Trig. 3 : R3
MisakiiteCu3Mn(OH)6Cl2Trig. 3m (3 2/m) : P3m1
ParatacamiteCu3(Cu,Zn)(OH)6Cl2Trig. 3m (3 2/m)
Paratacamite-(Mg)Cu3(Mg,Cu)(OH)6Cl2Trig. 3 : R3
Paratacamite-(Ni)Cu3(Ni,Cu)(OH)6Cl2Trig. 3 : R3
Unnamed (Cu-Zn Chloride Hydroxide)CuZnCl(OH)3Mon. 2/m : P21/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
Gypsum3 photos of Tondiite associated with Gypsum on mindat.org.

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 TondiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Rossi, M., Nestola, F., Bindi, L. and Ghiara, M.R. (2013) Tondiite, IMA 2013- 077. CNMNC Newsletter No. 18, December 2013, page 3253; Mineralogical Magazine, 77, 3249-3258.
Malcherek, T., Bindi, L., Dini, M., Ghiara, M. R., Molina Donoso, A., Nestola, F., Rossi, M., Schlüter, J. (2014): Tondiite, Cu3Mg(OH)6Cl2, the Mg-analogue of herbertsmithite. Mineral. Mag. 78, 583-590.

Internet Links for TondiiteHide

Localities for TondiiteHide

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.
Chile
 
  • Arica and Parinacota Region
    • Arica Province
      • Caleta Vítor district
Maurizio Dini (sample analysed by Tony Kampf, senior curator of NHM of LAC, California)
Malcherek, T., Bindi, L., Dini, M., Ghiara, M. R., Molina Donoso, A., Nestola, F., Rossi, M., Schlüter, J. (2014): Tondiite, Cu3Mg(OH)6Cl2, the Mg-analogue of herbertsmithite. Mineralogical Magazine 78, 583-590.
Italy (TL)
 
  • Campania
    • Naples Province
      • Somma-Vesuvius Complex
Rossi, M., Nestola, F., Bindi, L. and Ghiara, M.R. (2013) Tondiite, IMA 2013- 077. CNMNC Newsletter No. 18, December 2013, page 3253; Mineralogical Magazine, 77, 3249-3258; Malcherek, T., Bindi, L., Dini, M., Ghiara, M. R., Molina Donoso, A., Nestola, F., Rossi, M., Schlüter, J. (2014): Tondiite, Cu3Mg(OH)6Cl2, the Mg-analogue of herbertsmithite. Mineralogical Magazine 78, 583-590.
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2018, except where stated. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 19, 2018 22:52:16 Page generated: July 25, 2018 15:15:51
Go to top of page