Mindat Logo

Giorgiosite

This page is currently not sponsored. Click here to sponsor this page.



Formula:
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 5-6H
 
2
O
Colour:White
Name:For Giorgios, a volcanic cone on the island of Thera formed in 1866.


Inadequately described.
Compare hydromagnesite.

Classification of Giorgiosite

IMA status:Questionable/Doubtful
Strunz 8th edition ID:5/E.01-30
Nickel-Strunz 10th (pending) edition ID:5.DA.05

5 : CARBONATES (NITRATES)
D : Carbonates with additional anions, with H2O
A : With medium-sized cations
Dana 8th edition ID:16b.7.2.2

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
Hey's CIM Ref.:11.3.8

11 : Carbonates
3 : Carbonates of Mg
mindat.org URL:http://www.mindat.org/min-1697.html
Please feel free to link to this page.

Type Occurrence of Giorgiosite

Type Locality:Alphoessa lava flow (Aphroessa; Afroessa), Nea Kammeni Island, Santorini Caldera, Santorini Island (Thera), Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon), Kykládes Prefecture, Aegean Islands Department (Aiyaíon), Greece
Place of Conservation of Type Material:Natural History Museum, Paris, France.
Year of Discovery:1879
Geological Setting of type material:In white powdery crusts on lava.
Associated Minerals at type locality:
MagnesiteHalite

Physical Properties of Giorgiosite

Lustre:Silky
Diaphaneity (Transparency):Translucent
Colour:White
Density (measured):2.170(15) g/cm3
Comment:Synthetic

Crystallography of Giorgiosite

Morphology:Spherulitic growths in crusts

Optical Data of Giorgiosite

Type:Biaxial
RI values: nα = 1.498 nγ = 1.513
Maximum Birefringence:δ = 0.015

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:very weak
Optical Extinction:Positive elongation, parallel extinction

Chemical Properties of Giorgiosite

Formula:
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 5-6H
 
2
O
Simplified for copy/paste:Mg5(CO3)4(OH)2·5-6H2O
Essential elements:C, H, Mg, O
All elements listed in formula:C, H, Mg, O

Relationship of Giorgiosite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.DA.05Dypingite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 5H
 
2
O
5.DA.05Hydromagnesite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 4H
 
2
O
5.DA.05Widgiemoolthalite
Ni
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 5H
 
2
O
5.DA.05UM1986-10-CO:ClHMgMnZn
Mg
 
5
(Zn,Mn)
 
3
(CO
 
3
)
 
2
(OH,Cl)
 
12
· H
 
2
O
5.DA.05UM1987-01-CO:HMgS
Mg
 
4
(CO
 
3
)
 
2
(OH)
 
2
· 6H
 
2
O ?
5.DA.10Artinite
Mg
 
2
(CO
 
3
)(OH)
 
2
· 3H
 
2
O
5.DA.10Indigirite
Mg
 
2
Al
 
2
(CO
 
3
)
 
4
(OH)
 
2
· 15H
 
2
O
5.DA.10Chlorartinite
Mg
 
2
(CO
 
3
)(OH)Cl · 2H
 
2
O
5.DA.15Otwayite
Ni
 
2
(CO
 
3
)(OH)
 
2
· H
 
2
O
5.DA.15Zaratite
Ni
 
3
(CO
 
3
)(OH)
 
4
· 4H
 
2
O
5.DA.20Kambaldaite
NaNi
 
4
(CO
 
3
)
 
3
(OH)
 
3
· 3H
 
2
O
5.DA.25Callaghanite
Cu
 
2
Mg
 
2
(CO
 
3
)(OH)
 
6
· 2H
 
2
O
5.DA.30Claraite
(Cu,Zn)
 
3
(CO
 
3
)(OH)
 
4
· 4H
 
2
O
5.DA.35Hydroscarbroite
Al
 
14
(CO
 
3
)
 
3
(OH)
 
36
· nH
 
2
O
5.DA.35Scarbroite
Al
 
5
(CO
 
3
)(OH)
 
13
· 5H
 
2
O
5.DA.40Caresite
Fe
2+
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
5.DA.40Quintinite
Mg
 
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
5.DA.40Charmarite
Mn
2+
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
5.DA.45Stichtite-2H
Mg
 
6
(Cr,Al)
 
2
(CO
 
3
)(OH)
 
16
· 4H
 
2
O
5.DA.45Brugnatellite
Mg
 
6
Fe
3+
 
(CO
 
3
)(OH)
 
13
· 4H
 
2
O
5.DA.45Chlormagaluminite
Mg
 
4
Al
 
2
(OH)
 
12
Cl
 
2
· 3H
 
2
O
5.DA.45Hydrotalcite-2H
Mg
 
6
Al
 
2
(CO
 
3
)(OH)
 
16
· 4H
 
2
O
5.DA.45Pyroaurite-2H
Mg
 
6
Fe
3+
2
(CO
 
3
)(OH)
 
16
· 4H
 
2
O
5.DA.45Zaccagnaite
Zn
 
4
Al
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
5.DA.50Comblainite
Ni
 
4
Co
 
2
(OH)
 
12
[CO
 
3
] · 3H
 
2
O
5.DA.50Desautelsite
Mg
 
6
Mn
3+
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50Hydrotalcite
Mg
 
6
Al
 
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50Pyroaurite
Mg
 
6
Fe
3+
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50Reevesite
Ni
 
6
Fe
3+
2
(OH)
 
16
(CO
 
3
) · 4H
 
2
O
5.DA.50Stichtite
Mg
 
6
Cr
 
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50Takovite
Ni
 
6
Al
 
2
(OH)
 
16
[CO
 
3
] · 4H
 
2
O
5.DA.50UM1998-10-CO:CoHNi
Co
 
6
Fe
 
2
(CO
 
3
)(OH)
 
16
· 4H
 
2
O ?
5.DA.55Coalingite
Mg
 
10
Fe
3+
2
(OH)
 
24
[CO
 
3
] · 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
11.3.1Magnesite
MgCO
 
3
11.3.2Barringtonite
MgCO
 
3
· 2H
 
2
O
11.3.3Nesquehonite
MgCO
 
3
· 3H
 
2
O
11.3.4Lansfordite
MgCO
 
3
· 5H
 
2
O
11.3.5Pokrovskite
Mg
 
2
(CO
 
3
)(OH)
 
2
11.3.6Artinite
Mg
 
2
(CO
 
3
)(OH)
 
2
· 3H
 
2
O
11.3.7Hydromagnesite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 4H
 
2
O
11.3.9Dypingite
Mg
 
5
(CO
 
3
)
 
4
(OH)
 
2
· 5H
 
2
O
11.3.10Eitelite
Na
 
2
Mg(CO
 
3
)
 
2
11.3.11Mcguinnessite
(Mg,Cu)
 
2
(CO
 
3
)(OH)
 
2

Other Names for Giorgiosite

Other Languages:
German:Giorgiosit
Spanish:Giorgiosita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Giorgiosite

Reference List:

- +
Fouqué (1879) Santorin e ses éruptions, Paris: 211.

Lacroix (1905) Bulletin de la Société française de Minéralogie: 28: 198.

Lacroix (1905) Comptes rendu de l’Académie des sciences de Paris: 140: 1308.

Zambonini (1922) Neues Jahrbuch für Mineralogie, Geologie und Paleontologie, Heidelberg, Stuttgart: II: 134.

Caillère (1943) Bulletin de la Société française de Minéralogie: 66: 54.

Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged: 274.

Raade, G. (1970): Dypingite, a new hydrous bascic carbonate of magnesium, from Norway. American Mineralogist, 55, 1457-1465. [with comments on giorgiosite].

Friedel, B. (1975): Synthetischer Giorgiosit. Neues Jahrbuch für Mineralogie, Monatshefte, 196–208 (in German with English abs.).

Canterford, J.H., G. Tsambourakis, and B. Lambert (1984): Some observations on the properties of dypingite, Mg5(CO3)4(OH)2 •5H2O and related minerals. Mineral. Mag., 48, 437–442.

Internet Links for Giorgiosite

Search Engines:
  • Look for Giorgiosite on Google
  • Look for Giorgiosite images on Google
  • External Links:
  • Giorgiosite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Wilensky Fine Minerals
  • Lapis Mineral Magazin
  • Buy fine minerals and gemstones from Pala International
  • Find Giorgiosite on www.crystalclassics.co.uk
  • SpiriferMinerals.com - high quality low prices
  • Top quality minerals from Kristalle of California
  • rare and unusual minerals mainly crystallized
  • The Arkenstone - Fine Minerals
  • Fine Minerals from Weinrich Minerals, Inc.
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy from David K Joyce minerals
  • Fine and rare minerals from mintreasure.com
  • Jobs:
  • Mining & Geology Jobs
  • Localities for Giorgiosite

    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Canada
     
    • Yukon Territory
      • Dawson Mining District
    [Mineralogical Record - Vol 23 No.4, pp 37]
    Germany
     
    • North Rhine-Westphalia
      • Siegerland
        • Eiserfeld
    Henrich, M. (2008): Neues von der Grube Eisenzecher Zug. Mineralien-Welt 19 (5), 16-25.
    Greece
     
    • Aegean Islands Department (Aiyaíon)
      • Kykládes Prefecture
        • Cyclade Islands (Cyclades; Kikladhes; Nomos Kikladhon)
          • Santorini Island (Thera)
            • Santorini Caldera
              • Nea Kammeni Island
    NJMM (1975), 196
    Italy
     
    • Trentino-Alto Adige
      • Trento Province
        • Ala
          • Pilcante
    Giorgio Bortolozzi collection (IR analysis)
    • Tuscany
      • Livorno Province
        • Campiglia Marittima
          • Temperino
    Biagioni, C., Orlandi, P., Cerri, M., Pistolesi, M., Rapaccini, S. & Santucci, A. (2013). Temperino e Lanzi. Le paragenesi secondarie dello skarn. Rivista Mineralogica Italiana, 1/2013, 40-55.
    • Veneto
      • Vicenza Province
        • Posina
          • Borcola Pass
    Zordan A., Boscardin M. - Aggiornamenti di Mineralogia nel Vicentino. Determinazioni 2006. Studi e Ricerche - Associazione Amici del Museo Civico "G.Zannato", Montecchio Maggiore (Vicenza), 13 (2006), pp. 35-40.
          • Pasubio massif
            • Punta della Lucche
    Zordan A., Boscardin M. - Aggiornenti di mineralogia nel Vicentino. Determinazioni 2006. Studi e Ricerche - Associazione Amici del Museo - Museo Civico "G.Zannato", Montecchio Maggiore (Vicenza), 13 (2006),pp.35-40.
    Norway
     
    • Sogn og Fjordane
      • Fjaler
        • Hellevika
    Raade, G. (1993): Giorgsite, dypingite and nesquehonite from Sunnfjord. In: Interne notater 1990-1993, Mineralogisk-Geologisk Museum- Universitetet i Oslo. Utgitt av Geologisk Museums Venner 1993, p. 188-189. [Not officially published]
    Russia
     
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
    Cesnokov, B., Kotrly, M. and Nisanbajev, T. (1998): Brennende Abraumhalden und Aufschlüsse im Tscheljabinsker Kohlenbecken - eine reiche Mineralienküche. Mineralien-Welt, 9 (3), 54-63 (in German).
    USA
     
    • Pennsylvania
      • Carbon Co.
    Yale Peabody Museum
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: January 5, 2014 11:00:07
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds