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 Articles
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 CompaniesStatisticsThe ElementsUsersBooks & MagazinesMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Alakamisy-Itenina gem deposit (Lacamisinten), Alakamisy Itenina Commune, Vohibato District, Haute Matsiatra, Madagascari
Regional Level Types
Alakamisy-Itenina gem deposit (Lacamisinten)Deposit
Alakamisy Itenina CommuneCommune
Vohibato DistrictDistrict
Haute MatsiatraRegion
MadagascarCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Name(s) in local language(s):Karieran' i Alakamisy-Itenina, Kaominin' Alakamisy Itenina, Distrikan'i Vohibato, Faritra Haute Matsiatra, Faritanin'i Fianarantsoa, Madagasikara
Location is approximate, estimate based on other nearby localities.
 
Latitude & Longitude (WGS84): 21° South , 47° East (est.)
Margin of Error:~13km
Locality type:Deposit
Köppen climate type:Cfb : Temperate oceanic climate


Famous for polychromatic gem tourmalines found in a rice field that is situated in an ancient riverbed. A horizon covered by a 20 m thick layer of younger material has been the source of rounded tourmaline pieces up to 20 cm in diameter. Many of these were cut into very nice many-coloured slabs.
The locality is also referred to as a "Ricefield in the Fianarantsoa district".

The name Lacamisinten is a mispelling and the name is used by gem dealers. When the locality name “Alakamsiy-Itenina” is spoken out loud in the local dialect of the malagasy language, it could sounds like “Lacamisinten” in the ears of non-malagasy people.

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate
Fianarantsoa Province, MadagascarProvince

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


Detailed Mineral List:

'Liddicoatite'
Formula: Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Aurisicchio, C., Demartin, F., Ottolini, L. & Pezzotta, F. (1999): Homogeneous liddicoatite from Madagascar. A possible reference material? First EMPA, SIMS, and SREF data. European Journal of Mineralogy 11, 237-242.
'Rubellite'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Shigley, J. E., Laurs, B. M., Janse, A. J. A., Elen, S., & Dirlam, D. M. (2010). Gem Localities of the 2000s. Gems & Gemology, 46(3).
'Tourmaline'
Formula: A(D3)G6(T6O18)(BO3)3X3Z
Reference: Knut Edvard Larsen collection

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
'Liddicoatite'9.CK.05Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.
'Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
'Liddicoatite'61.3.1.2Ca(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Mixtures, etc.
'Rubellite'-A(D3)G6(T6O18)(BO3)3X3Z
'Tourmaline'-A(D3)G6(T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
LiLithium
Li LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
BBoron
B RubelliteA(D3)G6(T6O18)(BO3)3X3Z
B LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(T6O18)(BO3)3X3Z
OOxygen
O RubelliteA(D3)G6(T6O18)(BO3)3X3Z
O LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
O TourmalineA(D3)G6(T6O18)(BO3)3X3Z
AlAluminium
Al LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Si LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
CaCalcium
Ca LiddicoatiteCa(Li2Al)Al6(Si6O18)(BO3)3(OH)3(OH)

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
ExtraLapis 6, "Turmalin": p 73 + 75 [German version]
Aurisicchio, C., Demartin, F., Ottolini, L., Pezzotta, F. (1999): Homogeneous liddicoatite from Madagascar. A possible reference material? First EMPA, SIMS, and SREF data. European Journal of Mineralogy 11, 237-242.
Pezzotta, F. (1999): Madagaskar. Das Paradies der Mineralien und Edelsteine. ExtraLapis nr 17, 61 (german version) (short notice)


This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.
Mineral and/or Locality  
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 1993-2019, 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: January 21, 2019 11:34:48
View slideshow - Go to top of page