Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Mineral Chatroom The Mindat Store

Orthochrysotile

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



System:OrthorhombicHardness:2½ - 3
Member of:Serpentine Group
A polytype of Chrysotile

Originally described from Cuddapah, Chennai (Madras), Andhra Pradesh, India.

Classification of Orthochrysotile

IMA status:Discredited 2006
Explanation of status:A polytype of chrysotile
Strunz 8th edition ID:8/H.27-40

8 : Silicates
H : Phyllosilicates (layered), Tetragonal or pseudotetragonal layered structures [Si4O10]4- and others
27 : Serpentine group
Hey's CIM Ref.:14.4.6

14 : Silicates not Containing Aluminum
4 : Silicates of Mg
mindat.org URL:http://www.mindat.org/min-3025.html
Please feel free to link to this page.

Physical Properties of Orthochrysotile

Hardness (Mohs):2½ - 3

Crystallography of Orthochrysotile

Crystal System:Orthorhombic
Cell Parameters:a = 5.34Å, b = 9.24Å, c = 14.2Å
Ratio:a:b:c = 0.578 : 1 : 1.537
Unit Cell Volume:V 700.65 ų (Calculated from Unit Cell)

Optical Data of Orthochrysotile

Type:Biaxial (-)
RI values: nα = 1.545 - 1.569 nβ = 1.546 - 1.569 nγ = 1.553 - 1.571
2V:Measured: 20° to 60°
Maximum Birefringence:δ = 0.008

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

Relationship of Orthochrysotile to other Species

Member of:Serpentine Group
Other Members of Group:

- +
Amesite
Mg
 
2
Al(AlSiO
 
5
)(OH)
 
4
Antigorite
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
Berthierine
(Fe,Fe,Mg)
 
2-3
((Si,Al)
 
2
O
 
5
)(OH)
 
4
Brindleyite
(Ni,Mg,Fe)
 
2
(Al(Si,Al)O
 
5
)(OH)
 
4
Caryopilite
(Mn,Mg)
 
3
(Si
 
2
O
 
5
)(OH)
 
4
Chrysotile
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
Clinochrysotile
Cronstedtite
Fe
2+
2
Fe
3+
 
((Si,Fe
3+
 
)
 
2
O
 
5
)(OH)
 
4
Dickite
Al
 
2
(Si
 
2
O
 
5
)(OH)
 
4
Fraipontite
(Zn,Al)
 
3
((Si,Al)
 
2
O
 
5
)(OH)
 
4
Greenalite
Fe
 
2-3
(Si
 
2
O
 
5
)(OH)
 
4
Halloysite
Al
 
2
(Si
 
2
O
 
5
)(OH)
 
4
Kaolinite
Al
 
2
(Si
 
2
O
 
5
)(OH)
 
4
Kellyite
Mn
2+
2
Al(AlSiO
 
5
)(OH)
 
4
Lizardite
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
Manandonite
LiAl
 
4
(BSi
 
3
O
 
10
)(OH)
 
6
Nacrite
Al
 
2
(Si
 
2
O
 
5
)(OH)
 
4
Népouite
(Ni,Mg)
 
3
(Si
 
2
O
 
5
)(OH)
 
4
Odinite
(Fe,Mg,Al,Fe,Ti,Mn)
 
2.4
((Si,Al)
 
2
O
 
5
)(OH)
 
4
Parachrysotile
Pecoraite
Ni
 
3
(Si
 
2
O
 
5
)(OH)
 
4
Related Minerals - Strunz Grouping):

- +
8/H.27-10Antigorite
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
8/H.27-20Lizardite
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
8/H.27-50Parachrysotile
8/H.27-55Caryopilite
(Mn,Mg)
 
3
(Si
 
2
O
 
5
)(OH)
 
4
8/H.27-60Greenalite
Fe
 
2-3
(Si
 
2
O
 
5
)(OH)
 
4
8/H.27-70Berthierine
(Fe,Fe,Mg)
 
2-3
((Si,Al)
 
2
O
 
5
)(OH)
 
4
8/H.27-80Fraipontite
(Zn,Al)
 
3
((Si,Al)
 
2
O
 
5
)(OH)
 
4
8/H.27-95Dozyite
Mg
 
7
Al
 
2
(Al
 
2
Si
 
4
O
 
15
)(OH)
 
12
8/H.27-100Amesite
Mg
 
2
Al(AlSiO
 
5
)(OH)
 
4
8/H.27-110Kellyite
Mn
2+
2
Al(AlSiO
 
5
)(OH)
 
4
8/H.27-120Cronstedtite
Fe
2+
2
Fe
3+
 
((Si,Fe
3+
 
)
 
2
O
 
5
)(OH)
 
4
8/H.27-140Karpinskite
(Ni,Mg)
 
2
Si
 
2
O
 
5
(OH)
 
2
 (?)
8/H.27-150Népouite
(Ni,Mg)
 
3
(Si
 
2
O
 
5
)(OH)
 
4
8/H.27-160Pecoraite
Ni
 
3
(Si
 
2
O
 
5
)(OH)
 
4
8/H.27-170Brindleyite
(Ni,Mg,Fe)
 
2
(Al(Si,Al)O
 
5
)(OH)
 
4
8/H.27-190Carlosturanite
(Mg,Fe,Ti)
 
21
(Si,Al)
 
12
O
 
28
(OH)
 
34
Related Minerals - Hey's Index Grouping:

- +
14.4.1Forsterite
Mg
 
2
SiO
 
4
14.4.2Enstatite
MgSiO
 
3
14.4.3Clinoenstatite
MgSiO
 
3
14.4.4Chrysotile
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
14.4.5Clinochrysotile
14.4.7Parachrysotile
14.4.8Lizardite
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
14.4.9Talc
Mg
 
3
(Si
 
4
O
 
10
)(OH)
 
2
14.4.10Spadaite
MgSiO
 
2
(OH)
 
2
 · H
 
2
O (?)
14.4.11Sepiolite
Mg
 
4
(Si
 
6
O
 
15
)(OH)
 
2
 · 6H
 
2
O
14.4.12Loughlinite
Na
 
2
Mg
 
3
Si
 
6
O
 
16
 · 8H
 
2
O
14.4.13Eifelite
KNa
 
3
Mg
 
4
Si
 
12
O
 
30
14.4.14Stevensite
(Ca,Na)
 
x
Mg
 
3-x
(Si
 
4
O
 
10
)(OH)
 
2
14.4.15Antigorite
Mg
 
3
(Si
 
2
O
 
5
)(OH)
 
4
14.4.16 Magnesio-anthophyllite

Other Names for Orthochrysotile

Other Languages:
German:Orthochrysotil

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 Orthochrysotile

Reference List:

- +
Whittaker, E.J.W. (1956b) The structure of chrysotile . III. Orthochrysotile. Acta Crystallographica: 9: 862-864.

Internet Links for Orthochrysotile

Search Engines:
  • Look for Orthochrysotile on Google
  • Look for Orthochrysotile images on Google
    • External Links:
  • Orthochrysotile details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • webminerals
  • Search for Orthochrysotile from all mineral dealers at minfind.com
  • SpiriferMinerals.com - high quality low prices
  • Rare and Unusual minerals at Mineralogical Research Company
  • Search for minerals at Heliodor
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy RARE Minerals from Rocks of Africa
  • Buy from David K Joyce minerals
  • Pricedownminerals.com - Reverse Auctions and Shop
  • The Arkenstone - Fine Minerals
  • Search for - Orthochrysotile - on e-Rocks Mineral Sales & Auctions
  • By minerals from YourMineralCollection
    • Jobs:
  • Mining & Geology Jobs

    • Localities for Orthochrysotile

    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.
    Hide Locality List
    (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
     
    • Québec
      • Estrie
        • Les Sources RCM
          • Asbestos
    		Van King
    China
     
    • Jilin Province (Manchuria; Dongbei Region)
      • Tonghua Prefecture
        • Ji'an Co.
    		Youqin Li, Shaoying Jiang, and Wenwei Fan (1981): Chinese Journal of Geology 24(3)
    India
     
    • Andhra Pradesh
    		Rev. Min. (1988), 91
    Japan
     
    • Honshu Island
      • Chugoku Region
        • Yamaguchi Prefecture
          • Iwakuni City
            • Nishiki-cho
    		Motoiki Saito (1973) Some serpentine minerals occurring in Yamaguchi prefecture, Japan. Journal of Science of the Hiroshima University, series C, 7, 21-36.
              • Mitake
    		Motoiki Saito (1973) Some serpentine minerals occurring in Yamaguchi prefecture, Japan. Journal of Science of the Hiroshima University, series C, 7, 21-36.
    Norway
     
    • Buskerud
      • Kongsberg
    		Bancroft, P., Nordrum, F.S. & Lyckberg, P.(2001): Kongsberg revisited. Mineralogical Record 32: 181-205
    Swaziland
     
    • Hhohho District
      • Havelock
    		Canadian Mineralogist (1979) 17:679-691
    Sweden
     
    • Småland
      • Jönköping
        • Månsarp
    		Hans Thulin
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Albula Valley
        • Landwasser Valley
          • Davos
            • Wolfgang
    		Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): Mineralienlexikon der Schweiz. Wepf (Basel), p. 114-115.
    USA
     
    • California
      • Calaveras Co.
        • Copperopolis
      • San Francisco Co.
    		Schlocker, J. (1974) Geology of the San Francisco North quadrangle. USGS Professional Paper 782, 109 pp.: 58; Pemberton, H. Earl (1983), Minerals of California; Van Nostrand Reinholt Press: 424.
    • Nevada
      • Eureka Co.
    		NBMG Spec. Pub. 31 Minerals of Nevada
      • Nye Co.
        • Gabbs District
    		NBMG Spec. Pub. 31 Minerals of Nevada
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
    		Dunn(1995):Pt4:485.
    • Vermont
      • Orleans & Lamoille Cos.
        • Lowell & Eden
    		 Chidester, A.H., Albee, A.L., and Cady, W.M., (1978). Petrology, structure and genesis of the asbestos-bearing ultramafic rocks of the Belvidere Mountain area in Vermont: U.S. Geologic Survey Professional Paper 1016
    Mineral and/or Locality
    Search Google
     
    Copyright © Jolyon Ralph and Ida Chau 1993-2011. 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. 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: 24th Aug 2011 22:19:44
    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