Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (2 online) Mindat Auctions

Gageite-2M

Formula:
(Mn,Mg,Zn)
 
42
Si
 
16
O
 
54
(OH)
 
40
System:MonoclinicLustre:Vitreous
A polytype of Gageite

Classification of Gageite-2M

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Dana 8th edition ID:65.3.2.2a

65 : INOSILICATES Single-Width,Unbranched Chains,(W=1)
3 : Single-Width Unbranched Chains, W=1 with chains P=4
mindat.org URL:http://www.mindat.org/min-6960.html
Please feel free to link to this page.

Physical Properties of Gageite-2M

Lustre:Vitreous

Crystallography of Gageite-2M

Crystal System:Monoclinic

Optical Data of Gageite-2M

Type:Biaxial (-)
RI values: nα = 1.720 nβ = 1.730 nγ = 1.730
2V:Measured: 20° to 50°
Maximum Birefringence:δ = 0.010

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:High
Dispersion:relatively strong

Chemical Properties of Gageite-2M

Formula:
(Mn,Mg,Zn)
 
42
Si
 
16
O
 
54
(OH)
 
40
Essential elements:H, Mn, O, Si
All elements listed in formula:H, Mg, Mn, O, Si, Zn

Other Names for Gageite-2M

German names:
Gageit-2M

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 Gageite-2M

Reference List:American Mineralogist (1987): 72: 382-391.

Articles/Blogs about Gageite-2M

Internet Links for Gageite-2M

Search Engines:
  • Look for Gageite-2M on Google
  • Look for Gageite-2M images on Google
    • External Links:
  • Look for Gageite-2M on Webmineral
  • Look for Gageite-2M on Athena Mineralogy
  • Look for Gageite-2M on Wikipedia
  • Look for Gageite-2M on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Gageite-2M in the Natural History Museum (London) online catalogue
    • Mineral Dealers:
  • Rare and Unusual minerals at Mineralogical Research Company
  • Search for Gageite-2M at Thames Valley Minerals
  • Lapis Mineral Magazin
  • The Arkenstone - Fine Minerals
  • Top quality minerals from Kristalle of California
  • Buy from David K Joyce minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Fine Minerals from Dan Weinrich Minerals
  • Search for - Gageite-2M - on e-Rocks Mineral Sales & Auctions
  • Buy Fine Minerals from mineralsweb.com
  • Wendel Minerals - Auktion & Shop
  • High-end worldwide specimens & outstanding customer service
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

    Sponsorship:This page is currently not sponsored. Click here to find out how you can sponsor this page.

    Localities for Gageite-2M

    (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.
    South Africa
     
    • Northern Cape Province
      • Kalahari manganese fields
        • N'Chwaning Mines
    		www.excaliburmineral.com
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon & Ida Ralph 1993-2008. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the 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 hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register.