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Henritermierite

Big Photo

N'Chwaning Mines, Kalahari manganese fields, Northern Cape Province, South Africa
© Brent Thorne

Show Henritermierite Photos (5)
Formula:
Ca
 
3
(Mn
3+
 
,Al)
 
2
[(OH)
 
4
|(SiO
 
4
)
 
2
]
System:Tetragonal
Name:For French geologist, Henri François Émile Termier (b. 1897).


Garnet Group. The manganese analogue of Holtstamite.

Classification of Henritermierite

IMA status:Approved 1968
Strunz 8th edition ID:8/A.08-160
Nickel-Strunz 10th (pending) edition ID:9.AD.25

9 : SILICATES (Germanates)
A : Nesosilicates
D : Nesosilicates without additional anions; cations in [6] and/or greater coordination
Dana 8th edition ID:51.4.4.1

51 : NESOSILICATES Insular SiO4 Groups Only
4 : Insular SiO4 Groups Only with cations in [6] and >[6] coordination
Hey's CIM Ref.:16.16.19

16 : Silicates Containing Aluminum and other Metals
16 : Aluminosilicates of Mn
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Type Occurrence of Henritermierite

Type Locality:Tachgagalt Mine (Tachguagalt Mine), Tachgagalt (Tachguagalt), Ouarzazate Province, Souss-Massa-Draâ Region, Morocco
Year of Discovery:1969

Crystallography of Henritermierite

Crystal System:Tetragonal
Cell Parameters:a = 12.39Å, c = 11.91Å
Ratio:a:c = 1 : 0.961
Unit Cell Volume:V 1,828.33 ų (Calculated from Unit Cell)

Optical Data of Henritermierite

Type:Uniaxial (+)
RI values: nω = 1.765 nε = 1.800
Maximum Birefringence:δ = 0.035

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

Chemical Properties of Henritermierite

Formula:
Ca
 
3
(Mn
3+
 
,Al)
 
2
[(OH)
 
4
|(SiO
 
4
)
 
2
]
Essential elements:Ca, H, Mn, O, Si
All elements listed in formula:Al, Ca, H, Mn, O, Si
Common Impurities:Fe

Relationship of Henritermierite to other Species

Related to:
  • Garnet Group
    • Related Minerals - Nickel-Strunz Grouping):

    - +
    9.AD.05Larnite
    Ca
     
    2
    		[SiO
     
    4
    		]
    9.AD.10Calcio-Olivine
    Ca
     
    2
    		[SiO
     
    4
    		]
    9.AD.15Merwinite
    Ca
     
    3
    		Mg[SiO
     
    4
    		]
     
    2
    9.AD.20Bredigite
    Ca
     
    7
    		Mg[SiO
     
    4
    		]
     
    4
    9.AD.25Andradite
    Ca
     
    3
    		Fe
    3+
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Calderite
    (Mn
    2+
     
    		,Ca)
     
    3
    		(Fe
    3+
     
    		,Al)
     
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Goldmanite
    Ca
     
    3
    		(V
    3+
     
    		,Al,Fe
    3+
     
    		)
     
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Grossular
    Ca
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Hibschite
    Ca
     
    3
    		Al
     
    2
    		[(OH)
     
    6-1
    		|(SiO
     
    4
    		)
     
    1.5-2.5
    		]
    9.AD.25Hydroandradite
    Ca
     
    3
    		Fe
    3+
    2
    		(SiO
     
    4
    		)
     
    3-x
    		(OH)
     
    4x
    9.AD.25Katoite
    Ca
     
    3
    		Al
     
    2
    		[(OH)
     
    8-6
    		|(SiO
     
    4
    		)
     
    1-1.5
    		]
    9.AD.25Kimzeyite
    Ca
     
    3
    		(Zr,Ti)
     
    2
    		[(Si,Al,Fe
    3+
     
    		)O
     
    4
    		]
     
    3
    9.AD.25Knorringite
    Mg
     
    3
    		Cr
     
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Majorite
    Mg
     
    3
    		(Fe
    2+
     
    		,Si,Al)
     
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Morimotoite
    Ca
     
    3
    		(Ti,Fe
    2+
     
    		,Fe
    3+
     
    		)
     
    2
    		[(Si,Fe
    3+
     
    		)O
     
    4
    		]
     
    3
    		 (?)
    9.AD.25Pyrope
    Mg
     
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Schorlomite
    Ca
     
    3
    		(Ti,Fe
    3+
     
    		)
     
    2
    		[(Si,Fe
    3+
     
    		,Fe
    2+
     
    		)O
     
    4
    		]
     
    3
    9.AD.25Spessartine
    Mn
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Uvarovite
    Ca
     
    3
    		Cr
     
    2
    		[SiO
     
    4
    		]
     
    3
    9.AD.25Wadalite
    Ca
     
    6
    		(Al,Mg)
     
    4
    		[Cl
     
    3
    		|O
     
    4
    		|{(Si,Al,Fe
    3+
     
    		)O
     
    4
    		}
     
    3
    		]
    9.AD.25Holtstamite
    Ca
     
    3
    		(Al,Mn
    3+
     
    		)
     
    2
    		(SiO
     
    4
    		)
     
    2
    		(OH)
     
    4
    9.AD.30Coffinite
    (U,Th)[(OH)
     
    4x
    		|(SiO
     
    4
    		)
     
    1-x
    		]
    9.AD.30Hafnon
    (Hf,Zr)[SiO
     
    4
    		]
    9.AD.30Thorite
    (Th,U)[SiO
     
    4
    		]
    9.AD.30Thorogummite
    (Th,U)[(OH)
     
    4x
    		|(SiO
     
    4
    		)
     
    1-x
    		]
    9.AD.30Zircon
    Zr[SiO
     
    4
    		]
    9.AD.35Huttonite
    Th[SiO
     
    4
    		]
    9.AD.35Tombarthite-(Y)
    Y
     
    4
    		[HSiO
     
    4
    		]
     
    3
    9.AD.40Eulytine
    Bi
     
    4
    		[SiO
     
    4
    		]
     
    3
    9.AD.45Reidite
    Zr[SiO
     
    4
    		]
    Related Minerals - Hey's Index Grouping:

    - +
    16.16.1Kanonaite
    Mn
    3+
     
    		Al[O|SiO
     
    4
    		]
    16.16.2Spessartine
    Mn
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    16.16.3Davreuxite
    MnAl
     
    6
    		Si
     
    4
    		O
     
    17
    		(OH)
     
    2
    16.16.4Sursassite
    Mn
     
    2
    		Al
     
    3
    		[(OH)
     
    3
    		|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    16.16.5Carpholite
    Mn
    2+
     
    		Al
     
    2
    		[(OH)
     
    4
    		|Si
     
    2
    		O
     
    6
    		]
    16.16.6Kellyite
    Mn
    2+
    2
    		Al[(OH)
     
    4
    		|AlSiO
     
    5
    		]
    16.16.7Pennantite
    (Mn
     
    5
    		Al)(Si
     
    3
    		Al)O
     
    10
    		(OH)
     
    8
    16.16.8Akatoreite
    (Mn
    2+
     
    		,Fe
    2+
     
    		)
     
    9
    		Al
     
    2
    		[(OH)
     
    3
    		|HSi
     
    4
    		O
     
    13
    		]
    16.16.9Ganophyllite
    (K,Na,Ca)
     
    2
    		Mn
     
    8
    		(Si,Al)
     
    12
    		(O,OH)
     
    32
    		·8H
     
    2
    		O
    16.16.10Kôzulite
    [Na][Na
     
    2
    		][Mn
    2+
    4
    		(Fe
    3+
     
    		,Al)][(OH)
     
    2
    		|Si
     
    8
    		O
     
    22
    		]
    16.16.11Masutomilite
    (K,Rb)(Li,Mn
    3+
     
    		,Al)
     
    3
    		[(F,OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    16.16.13Howieite
    Na(Fe,Mn)
     
    10
    		(Fe,Al)
     
    2
    		Si
     
    12
    		O
     
    31
    		(OH)
     
    13
    16.16.14Eggletonite
    (Na,K,Ca)
     
    2
    		(Mn,Fe)
     
    8
    		(Si,Al)
     
    12
    		O
     
    29
    		(OH)
     
    7
    		·11H
     
    2
    		O
    16.16.15Bannisterite
    Ca
     
    0.5
    		(K,Na)
     
    0.5
    		(Mn,Fe,Zn)
     
    10
    		(Si,Al)
     
    16
    		O
     
    38
    		(OH)
     
    8
    		·5.5H
     
    2
    		O
    16.16.16Taneyamalite
    (Na,Ca)(Mn,Mg,Fe)
     
    12
    		Si
     
    12
    		(O,OH)
     
    44
    16.16.17Zussmanite
    K(Fe,Mg,Mn)
     
    13
    		(Si,Al)
     
    18
    		O
     
    42
    		(OH)
     
    14
    16.16.18Coombsite
    K(Mn,Fe,Mg)
     
    13
    		(Si,Al)
     
    18
    		O
     
    42
    		(OH)
     
    14
    16.16.20Macfallite
    Ca
     
    2
    		(Mn
    3+
     
    		,Al)
     
    3
    		[(OH)
     
    3
    		|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    16.16.21Ottrélite
    (Mn
    2+
     
    		,Fe
    2+
     
    		,Mg)Al
     
    2
    		[O|(OH)
     
    2
    		|SiO
     
    4
    		]
    16.16.22Piemontite
    {Ca
     
    2
    		}{Al
     
    2
    		Mn
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]
    16.16.23Okhotskite
    Ca
     
    8
    		(Mn,Mg)
     
    4
    		(Mn,Al,Fe)
     
    8
    		Si
     
    12
    		O
     
    56-n
    		(OH)
     
    n
    16.16.24Pumpellyite-(Mn2+)
    Ca
     
    2
    		(Mn
    2+
     
    		,Mg)(Al,Mn
    3+
     
    		,Fe
    3+
     
    		)
     
    2
    		[(OH)
     
    2
    		|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    16.16.25Piemontite-(Sr)
    {CaSr}{Al
     
    2
    		Mn
    3+
     
    		}[O|OH|SiO
     
    4
    		|Si
     
    2
    		O
     
    7
    		]

    Other Names for Henritermierite

    Synonyms:
    IMA1968-029
    Other Languages:
    German:Henritermierit
    Russian:Генритермьерит
    Spanish:Henritermierita

    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 Henritermierite

    Reference List:American Mineralogist: 54: 1739.

    Bulletin de Mineralogie: 92: 126-133.

    Articles/Blogs about Henritermierite

    Internet Links for Henritermierite

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    Localities for Henritermierite

    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.
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    (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.
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tachgagalt (Tachguagalt)
    		Bull.Soc.fr.Min.Crist. 92 (1969), 185; Handbook of Mineralogy 2/1 (1995)
    South Africa
     
    • Northern Cape Province
      • Kalahari manganese fields
        • Hotazel
    		[Von Bezing, K. L. et al. (1991) - The Kalahari manganese field : an update, Mineralogical Record, 22 (3), 279-302]; European Journal of Mineralogy: 17(2): 375-382.
        • N'Chwaning Mines
    		[Von Bezing, K. L. et al. (1991) - The Kalahari (Afrique du Sud) manganese field : an update, Mineralogical Record, 22 (3), 279-302.]
    Minerals of South Africa
    Mineral and/or Locality
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