Mindat Logo
Home Page Log In Message Board The Mindat Directory
Register Search Pages Chat Now! (3 online) Mindat Auctions

Camgasite

Formula:
CaMg[OH|AsO
 
4
] · 5H
 
2
O
System:MonoclinicHardness:2
Name:Named for Ca Mg As
This page provides mineralogical data about Camgasite.

Classification of Camgasite

IMA status:Approved
Strunz 8th edition ID:7/D.36-20
Nickel-Strunz 10th (pending) edition ID:8.DJ.15

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
J : With large and medium-sized cations, (OH, etc.):RO4 = 1:1
Dana 8th edition ID:42.7.16.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
Hey's CIM Ref.:20.2.20

20 : Arsenates (also arsenates with phosphate, but without other anions)
2 : Arsenates of Be, Mg, Ca or Ba
mindat.org URL:http://www.mindat.org/min-874.html
Please feel free to link to this page.

Type Occurrence of Camgasite

Type Locality:Johann Mine, Burgfelsen, Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany
Year of Discovery:1989

Physical Properties of Camgasite

Hardness (Mohs):2

Crystallography of Camgasite

Crystal System:Monoclinic
Cell Parameters:a = 9.18Å, b = 7.63Å, c = 16.27Å
β = 128°
Ratio:a:b:c = 1.203 : 1 : 2.132
Unit Cell Volume:V 898.02 ų (Calculated from Unit Cell)

Optical Data of Camgasite

Type:Biaxial (+)
RI values: nα = 1.540 nβ = 1.548 nγ = 1.563
2V:Measured: 74° , Calculated: 74°
Maximum Birefringence:δ = 0.023

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

Chemical Properties of Camgasite

Formula:
CaMg[OH|AsO
 
4
] · 5H
 
2
O
Essential elements:As, Ca, H, Mg, O
All elements listed in formula:As, Ca, H, Mg, O

Relationship of Camgasite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.DJ.05Johnwalkite
K(Mn
2+
 
,Fe
2+
 
,Fe
3+
 
)
 
2
(Nb
5+
 
,Ta
5+
 
)[O|PO
 
4
]
 
2
 · 2(H
 
2
O,OH)
8.DJ.05Olmsteadite
KFe
2+
2
(Nb
5+
 
,Ta
5+
 
)[O|PO
 
4
]
 
2
 · 2H
 
2
O
8.DJ.10Gatumbaite
CaAl
 
2
[OH|PO
 
4
]
 
2
 · H
 
2
O
8.DJ.20Phosphofibrite
[K
 
<0.5
(H
 
2
O)
 
3
][(Fe
3+
 
,Cu)
 
8
(PO
 
4
)
 
6
(OH)
 
7
(H
 
2
O)
 
4
]
8.DJ.20Meurigite-K
[K(H
 
2
O)
 
2.5
][Fe
3+
8
(PO
 
4
)
 
6
(OH)
 
7
(H
 
2
O)
 
4
]
8.DJ.20Meurigite-Na
[Na(H
 
2
O)
 
2.5
][Fe
3+
8
(PO
 
4
)
 
6
(OH)
 
7
(H
 
2
O)
 
4
]
8.DJ.25Jungite
Ca
 
2
Zn
 
4
Fe
3+
8
[OH|PO
 
4
]
 
9
 · 16H
 
2
O
8.DJ.30Wycheproofite
NaAlZr[OH|PO
 
4
]
 
2
 · H
 
2
O
8.DJ.35Ercitite
Na
 
2
(H
 
2
O)
 
4
[Mn
3+
2
(OH)
 
2
(PO
 
4
)
 
2
]
8.DJ.40Mrázekite
Bi
 
2
Cu
 
3
[O|OH|PO
 
4
]
 
2
 · H
 
2
O
8.DJ.45Attikaite
Ca
 
3
Cu
 
2
Al
 
2
[AsO
 
4
]
 
4
(OH)
 
4
 · 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
20.2.1Bearsite
Be
 
2
[OH|AsO
 
4
] · 4H
 
2
O
20.2.2Brassite
MgHAsO
 
4
·4H
 
2
O
20.2.3Rösslerite
MgHAsO
 
4
·7H
 
2
O
20.2.4Hörnesite
Mg
 
3
(AsO
 
4
)
 
2
·8H
 
2
O
20.2.5Weilite
CaHAsO
 
4
20.2.6Johnbaumite
Ca
 
5
[OH|(AsO
 
4
)
 
3
]
20.2.7Haidingerite
Ca[HAsO
 
4
] · H
 
2
O
20.2.8Pharmacolite
CaHAsO
 
4
·2H
 
2
O
20.2.9Sainfeldite
Ca
 
5
(AsO
 
3
OH)
 
2
(AsO
 
4
)
 
2
·4H
 
2
O
20.2.10Vladimirite
Ca
 
5
[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 5H
 
2
O
20.2.11Guérinite
Ca
 
5
[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 9H
 
2
O
20.2.12Ferrarisite
Ca
 
5
[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 9H
 
2
O
20.2.13Rauenthalite
Ca
 
3
[AsO
 
4
]
 
2
 · 10H
 
2
O
20.2.14Phaunouxite
Ca
 
3
[AsO
 
4
]
 
2
 · 11H
 
2
O
20.2.15Mcnearite
NaCa
 
5
[(HAsO
 
4
)
 
4
|AsO
 
4
] · 4H
 
2
O
20.2.16Bergslagite
CaBe[OH|AsO
 
4
]
20.2.17Adelite
CaMg[AsO
 
4
](OH)
20.2.18Talmessite
Ca
 
2
Mg[AsO
 
4
]
 
2
 · 2H
 
2
O
20.2.19Irhtemite
Ca
 
4
Mg[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 4H
 
2
O
20.2.21Picropharmacolite
Ca
 
4
Mg[(HAsO
 
4
)
 
2
|(AsO
 
4
)
 
2
] · 11H
 
2
O
20.2.22Bariopharmacosiderite
BaFe
3+
4
[(OH)
 
5
|(AsO
 
4
)
 
3
] · 5H
 
2
O

Other Names for Camgasite

Synonyms:
IMA1988-031
Other Languages:
German:Camgasit
Spanish:Camgasita

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 Camgasite

Reference List:American Mineralogist: 76: 2021.

Aufschluss: 40: 369-372.

Internet Links for Camgasite

Search Engines:
  • Look for Camgasite on Google
  • Look for Camgasite images on Google
    • External Links:
  • Look for Camgasite on Webmineral
  • Look for Camgasite on Athena Mineralogy
  • Look for Camgasite on Wikipedia
  • Look for Camgasite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Search for Camgasite in the Natural History Museum (London) online catalogue
  • Camgasite details from Handbook of Mineralogy (PDF)
    • Mineral Dealers:
  • Rare and Unusual minerals at Mineralogical Research Company
  • Fabre Minerals - search for Camgasite specimens
  • Buy minerals from Mineralium.com
  • Search for - Camgasite - on e-Rocks Mineral Sales & Auctions
  • Edwards Minerals - Fine Specimens
  • Buy Fine Minerals from mineralsweb.com
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy from David K Joyce minerals
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Find Camgasite on www.crystalclassics.co.uk
  • The Arkenstone - Fine Minerals
  • Buy Minerals and Crystals from Crystalarium.com
    • Jobs:
  • Mining & Geology Jobs

    • Page Sponsor

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

    Localities for Camgasite

    (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.
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Schenkenzell
          • Wittichen
            • Burgfelsen
    		American Mineralogist: 76: 2021.
    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: 10th Nov 2009 19:18:52