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

Hodgkinsonite

Big Photo

Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
© JBS 2006

Show Hodgkinsonite Photos (10)
Formula:
Mn
2+
 
Zn
 
2
[(OH)
 
2
|SiO
 
4
]
System:MonoclinicHardness:4½ - 5
This page provides mineralogical data about Hodgkinsonite.

Classification of Hodgkinsonite

IMA status:Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
Strunz 8th edition ID:8/B.01-20
Nickel-Strunz 10th (pending) edition ID:9.AE.20

9 : SILICATES (Germanates)
A : Nesosilicates
E : Nesosilicates with additional anions (O,OH,F,H2O); cations in tetrahedral [4] coordination
Dana 8th edition ID:52.2.1.3

52 : NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
2 : Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
Hey's CIM Ref.:14.7.20

14 : Silicates not Containing Aluminum
7 : Silicates of Ba, Sr and Zn
mindat.org URL:http://www.mindat.org/min-1913.html
Please feel free to link to this page.

Type Occurrence of Hodgkinsonite

Co-type Localities:Franklin Mine, Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Hamburg Mine (Hamburg Road Mine), Franklin, Franklin Mining District, Sussex Co., New Jersey, USA
Year of Discovery:1913

Physical Properties of Hodgkinsonite

Hardness (Mohs):4½ - 5

Crystallography of Hodgkinsonite

Crystal System:Monoclinic
Cell Parameters:a = 11.76Å, b = 5.31Å, c = 8.18Å
β = 95.42°
Ratio:a:b:c = 2.215 : 1 : 1.54
Unit Cell Volume:V 508.52 ų (Calculated from Unit Cell)

Optical Data of Hodgkinsonite

Type:Biaxial (-)
RI values: nα = 1.720 nβ = 1.741 nγ = 1.746
Maximum Birefringence:δ = 0.026

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

Chemical Properties of Hodgkinsonite

Formula:
Mn
2+
 
Zn
 
2
[(OH)
 
2
|SiO
 
4
]
Essential elements:H, Mn, O, Si, Sn
All elements listed in formula:H, Mn, O, Si, Zn
Common Impurities:Fe,Mg,Ca

Relationship of Hodgkinsonite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
9.AE.05Beryllite
Be
 
3
[(OH)
 
2
|SiO
 
4
] · H
 
2
O
9.AE.10Euclase
BeAl[OH|SiO
 
4
]
9.AE.15Sverigeite
NaMnMgSnBe
 
2
Si
 
3
O
 
12
(OH)
9.AE.25Gerstmannite
(Mg,Mn
2+
 
)Zn[(OH)
 
2
|SiO
 
4
]
9.AE.30Clinohedrite
CaZn[SiO
 
4
] · H
 
2
O
9.AE.35Stringhamite
CaCu[SiO
 
4
] · H
 
2
O
9.AE.40Katoptrite
(Mn
2+
 
,Mg)
 
13
(Al,Fe
3+
 
)
 
4
Sb
5+
2
[O
 
10
|SiO
 
4
]
 
2
9.AE.45Yeatmanite
Mn
2+
7
Zn
 
8
Sb
5+
2
[O
 
3
|SiO
 
4
]
 
4
9.AE.50Sphaerobertrandite
Be
 
3
SiO
 
4
(OH)
 
2
Related Minerals - Hey's Index Grouping:

- +
14.7.1Sanbornite
Ba
 
2
[Si
 
4
O
 
10
]
14.7.2Krauskopfite
BaSi
 
2
O
 
5
·3H
 
2
O
14.7.3Walstromite
BaCa
 
2
[Si
 
3
O
 
9
]
14.7.4Macdonaldite
BaCa
 
4
Si
 
16
O
 
36
(OH)
 
2
·10H
 
2
O
14.7.5Ericssonite
BaMn
2+
2
Fe
3+
 
[O|OH|Si
 
2
O
 
7
]
14.7.6Orthoericssonite
BaMn
2+
2
Fe
3+
 
[O|OH|Si
 
2
O
 
7
]
14.7.7Gillespite
BaFe
2+
 
[Si
 
4
O
 
10
]
14.7.8Andrémeyerite
BaFe
2+
2
[Si
 
2
O
 
7
]
14.7.9Pellyite
Ba
 
2
Ca(Fe,Mg)
 
2
Si
 
6
O
 
17
14.7.10Taikanite
Sr
 
3
BaMn
2+
2
[O|Si
 
2
O
 
6
]
 
2
14.7.11Willemite
Zn
 
2
[SiO
 
4
]
14.7.12Hemimorphite
Zn
 
4
[(OH)
 
2
|Si
 
2
O
 
7
] · H
 
2
O
14.7.13Zincsilite
Zn
 
3
Si
 
4
O
 
10
(OH)
 
2
·4H
 
2
O
14.7.14Hardystonite
Ca
 
2
Zn[Si
 
2
O
 
7
]
14.7.15Petedunnite
Ca(Zn,Mn
2+
 
,Mg,Fe
2+
 
)[Si
 
2
O
 
6
]
14.7.16Clinohedrite
CaZn[SiO
 
4
] · H
 
2
O
14.7.17Junitoite
CaZn
 
2
[Si
 
2
O
 
7
] · H
 
2
O
14.7.18Larsenite
PbZn[SiO
 
4
]
14.7.19Esperite
PbCa
 
3
Zn
 
4
[SiO
 
4
]
 
4
14.7.21Gerstmannite
(Mg,Mn
2+
 
)Zn[(OH)
 
2
|SiO
 
4
]
14.7.22Gageite
Mn
 
21
O
 
3
(Si
 
4
O
 
12
)
 
2
(OH)
 
20
14.7.23Franklinfurnaceite
Ca
 
2
FeMn
 
3
MnZn
 
2
Si
 
2
O
 
10
(OH)
 
8

Other Names for Hodgkinsonite

Other Languages:
German:Hodgkinsonit
Russian:Годкинсонит
Spanish:Hodgkinsonita

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 Hodgkinsonite

Reference List:Mineralogical Record (1982): 13: 229.

Internet Links for Hodgkinsonite

Search Engines:
  • Look for Hodgkinsonite on Google
  • Look for Hodgkinsonite images on Google
    • External Links:
  • Look for Hodgkinsonite on Webmineral
  • Look for Hodgkinsonite on Athena Mineralogy
  • Look for Hodgkinsonite on Wikipedia
  • Look for Hodgkinsonite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Hodgkinsonite in the Natural History Museum (London) online catalogue
  • Hodgkinsonite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Buy RARE Minerals from Rocks of Africa
  • Wendel Minerals - Auktion & Shop
  • Top quality minerals from Kristalle of California
  • Lapis Mineral Magazin
  • Search for - Hodgkinsonite - on e-Rocks Mineral Sales & Auctions
  • Wilensky Fine Minerals
  • rare and unusual minerals mainly crystallized
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy minerals from Mineralium.com
  • Buy Fine Minerals from mineralsweb.com
  • Edwards Minerals - Fine Specimens
  • Buy from David K Joyce minerals
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

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

    Localities for Hodgkinsonite

    Hide Locality List
    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.
    USA
     
    • New Jersey
      • Sussex Co.
        • Franklin Mining District
          • Franklin
    		Palache(1935):111; Dunn(1995):Pt3:373.
    Palache(1935):110.
          • Ogdensburg
            • Sterling Hill
    		Cook, D.K.: Recent work on the mins. of Franklin & Sterling Hill, NJ: Min.Rec.:4:62-66 (1973); Dunn(1995):Pt3:375-376.
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. 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. Current server date and time: 18th Nov 2009 09:50:19