Denotes the relation to carpholite, and the substitution of potassium for the vacancy at the A(2)site. The original approved species name was potassic-carpholite, including a hyphen. The IMA later removed the hyphen (Burke 2008).

Type Locality:

ⓘ Sawtooth Batholith, Idaho, USA

This page provides mineralogical data about Potassiccarpholite.

Unique IdentifiersHide

Mindat ID:

25704

Long-form identifier:

mindat:1:1:25704:8

GUID
(UUID V4):

943ea793-cd4b-43f0-bf63-b1ade11321df

Classification of PotassiccarpholiteHide

IMA status:

Approved

Approval year:

2002

First published:

2004

Type description reference:

Tait, K.T., Hawthorne, F.C., Grice, J.D., Jambor, J.L., Pinch, W.W. (2004) Potassic-carpholite, a new mineral species from the Sawtooth batholith, Boise County, Idaho, U.S.A.. The Canadian Mineralogist: 42: 121-124.

Strunz-mindat (2023):

9.DB.05

9 : SILICATES (Germanates)
D : Inosilicates
B : Inosilicates with 2-periodic single chains, Si₂O₆; Pyroxene-related minerals

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Symbol	Source	Reference
Pcar	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of PotassiccarpholiteHide

Lustre:

Vitreous

Transparency:

Transparent

Colour:

White, straw-yellow

Streak:

white

Hardness:

5 on Mohs scale

Hardness Data:

Measured

Cleavage:

Perfect
parallel to [100]

Fracture:

Irregular/Uneven

Density:

3.08 g/cm³ (Measured) 3.06 g/cm³ (Calculated)

Optical Data of PotassiccarpholiteHide

Type:

Biaxial (-)

RI values:

n_α = 1.578 n_β = 1.592 n_γ = 1.598

2V:

Measured: 57° , Calculated: 66°

Max Birefringence:

δ = 0.020

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Surface Relief:

Moderate

Pleochroism:

Weak

Comments:

X pale yellow, Y=Z colorless, with X>Y,Z and X=b, Y=a, and Z=c

Comments:

measured with a Bloss spindle stage for the wavelength 590nm using a gel filter

Chemical Properties of PotassiccarpholiteHide

Formula:

K(Mn²⁺,Li)₂Al₄Si₄O₁₂(OH,F)₈

Elements listed:

Al, F, H, K, Li, Mn, O, Si - search for minerals with similar chemistry

Crystallography of PotassiccarpholiteHide

Crystal System:

Orthorhombic

Class (H-M):

mmm (2/m 2/m 2/m) - Dipyramidal

Space Group:

Ccca

Cell Parameters:

a = 13.715 Å, b = 20.302 Å, c = 5.138 Å

Ratio:

a:b:c = 0.676 : 1 : 0.253

Unit Cell V:

1430.6 Å³

Morphology:

acicular, elongate along [100]

Twinning:

not observed

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
5.705 Å	(100)
3.819 Å	(80)
3.433 Å	(80)
3.048 Å	(90)
2.744 Å	(80)
2.613 Å	(100)
2.050 Å	(80)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 4a: Earth’s earliest continental crust	>4.4-3.0
19 : Granitic intrusive rocks

Type Occurrence of PotassiccarpholiteHide

Type Locality:

ⓘ Sawtooth Batholith, Idaho, USA

General Appearance of Type Material:

Irregular tufts (up to 2 mm across) of radiating acicular to fibrous crystals in miarolitic cavities.

Place of Conservation of Type Material:

Canadian Museum of Nature, Ottawa, Ontario, Canada

Geological Setting of Type Material:

Anorogenic Tertiary granite pluton

Associated Minerals at Type Locality:

Zinnwaldite	Topaz	Quartz	Microcline	Hematite
Hellandite	Fluorite	Fluorapatite	Beryl	Bertrandite
Albite

Reference:

Download:

https://rruff.info/rruff_1.0/uploads/CM42_121.pdf

Synonyms of PotassiccarpholiteHide

IMA2002-064

Potassic-carpholite

Other Language Names for PotassiccarpholiteHide

German:Kaliumkarpholith

Simplified Chinese:富钾纤锰柱石

Traditional Chinese:富鉀纖錳柱石

Relationship of Potassiccarpholite to other SpeciesHide

Member of:

Carpholite Group

Other Members of this group:

Carpholite	Mn²⁺Al₂(Si₂O₆)(OH)₄	Orth. mmm (2/m 2/m 2/m) : Ccca
Ferrocarpholite	Fe²⁺Al₂Si₂O₆(OH)₄	Orth. mmm (2/m 2/m 2/m) : Ccca
Magnesiocarpholite	MgAl₂Si₂O₆(OH)₄	Orth. mmm (2/m 2/m 2/m) : Ccca
Vanadiocarpholite	Mn²⁺V³⁺Al(Si₂O₆)(OH)₄	Orth. mmm (2/m 2/m 2/m) : Ccca

Common AssociatesHide

Associated Minerals Based on Photo Data:

1 photo of Potassiccarpholite associated with Albite	Na(AlSi₃O₈)
1 photo of Potassiccarpholite associated with Topaz	Al₂(SiO₄)(F,OH)₂

Related Minerals - Strunz-mindat Grouping Hide

9.DB.05	Balipholite	BaLiMg₂Al₃(Si₂O₆)₂(OH)₄	Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05	Carpholite	Mn²⁺Al₂(Si₂O₆)(OH)₄	Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05	Ferrocarpholite	Fe²⁺Al₂Si₂O₆(OH)₄	Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05	Magnesiocarpholite	MgAl₂Si₂O₆(OH)₄	Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.05	Vanadiocarpholite	Mn²⁺V³⁺Al(Si₂O₆)(OH)₄	Orth. mmm (2/m 2/m 2/m) : Ccca
9.DB.10	Lorenzenite	Na₂Ti₂(Si₂O₆)O₃	Orth. mmm (2/m 2/m 2/m) : Pbcn
9.DB.15	Lintisite	LiNa₃Ti₂(Si₂O₆)₂O₂ · 2H₂O	Mon. 2/m : B2/b
9.DB.15	Punkaruaivite	LiTi₂(HSi₄O₁₂)(OH)₂ · H₂O	Mon. 2/m : B2/b
9.DB.17	Eliseevite	LiNa_1.5Ti₂(H_1.5Si₄O₁₂)O₂ · 2H₂O	Mon. 2/m : B2/b
9.DB.20	Kukisvumite	Na₆ZnTi₄(Si₈O₂₄)O₄ · 4H₂O	Orth. mmm (2/m 2/m 2/m) : Pccn
9.DB.20	Manganokukisvumite	Na₆MnTi₄(Si₈O₂₄)O₄ · 4H₂O	Orth. mmm (2/m 2/m 2/m) : Pccn
9.DB.25	Vinogradovite	Na₄Ti₄(Si₂O₆)₂[(Si,Al)₄O₁₀]O₄ · (H₂O,Na,K)₃	Mon. 2/m : B2/b
9.DB.25	Paravinogradovite	Na_1-2(Ti,Fe³⁺)₄(Si₂O₆)₂(AlSi₃O₁₀)(OH)₄ · H₂O	Tric. 1 : P1
9.DB.30	Nchwaningite	Mn²⁺₂(SiO₃)(OH)₂ · H₂O	Orth. mm2 : Pca2₁
9.DB.35	Plancheite	Cu₈(Si₈O₂₂)(OH)₄ · H₂O	Orth. mmm (2/m 2/m 2/m)
9.DB.40	Shattuckite	Cu₅(Si₂O₆)₂(OH)₂	Orth. mmm (2/m 2/m 2/m)
9.DB.40	UM2005-31-SiO:CuH	Cu₁₁(SiO₄)(OH)₁₈ · 9H₂O (?)
9.DB.45	Aerinite	(Ca_5.1Na_0.5)(Fe³⁺,Al,Fe²⁺,Mg)₄(Al,Mg)₆[HSi₁₂O₃₆(OH)₁₂][(CO₃)_1.2(H₂O)₁₂]	Trig. 3m : P3c1
9.DB.50	Capranicaite	KCaNaAl₄B₄Si₂O₁₈	Mon. 2/m : P2₁/m

Other InformationHide

Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for PotassiccarpholiteHide

mindat.org URL:

https://www.mindat.org/min-25704.html
Please feel free to link to this page.

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External Links:

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Raman and XRD data at RRUFF project

References and PDF downloads at RRUFF project

American Mineralogist Crystal Structure Database

Handbook of Mineralogy page PDF

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References for PotassiccarpholiteHide

Reference List:

Ghose, S., Sen Gupta, P.K., Boggs, R.C., Schlemper, E.O. (1989) Crystal chemistry of a nonstoichiometric carpholite, Kx(Mn2-xLix)Al4Si4O12(OH)4F4: A chain silicate related to pyroxenes. American Mineralogist: 74: 1084-1090.

Van Laer, W.C. (2005) Potassic-carpholite and the myth of Centerville, Idaho. The Canadian Mineralogist: 43: 1125-1126.

Burke, E.A.J. (2008) Tidying up mineral names: an IMA-CNMNC scheme for suffixes, hyphens and diacritical marks. The Mineralogical Record: 39: 131-135.

Basso, R., Carbone, C. (2010) Relationships between crystal data and crystal chemistry of carpholite-group minerals. Periodico di Mineralogia: 79: 91-98.

Localities for PotassiccarpholiteHide

This 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.

Locality ListHide

- This locality has map coordinates listed.

- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality.

- Good crystals or important locality for species.

- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). ~~Struck out~~ - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.


USA
Idaho Boise County ⓘ Ardeth Lake	W.C. van Laer: the Sawtooth batholith, mindat 2009
ⓘ Glens Peak	William C. van Laer collection
Elmore County Glens Peak area ⓘ Glens Peak prospects	WC van Laer, 2009
ⓘ Sawtooth Batholith (TL)	W.C. van Laer, 2009 *Ream, Lanny R. (2004) Idaho Minerals* (2nd ed.) L. R. Ream Publishing, Coeur d'Alene, ID.** Tait, K.T., Hawthorne, F.C., Grice, J.D., Jambor, J.L., and Pinch, W.W. (2004) Potassic-carpholite, a new mineral species from the Sawtooth batholith, Boise County, Idaho, U.S.A. Canadian Mineralogist 42, 121-124.

Potassiccarpholite

About PotassiccarpholiteHide