Carpholite information

Carpholite
Carpholite
General
Category	Inosilicate
Formula; (repeating unit)	Mn2+Al2Si2O6(OH)4
IMA symbol	Car
Strunz classification	9.DB.05
Crystal system	Orthorhombic
Crystal class	Dipyramidal (mmm) ; H-M symbol: (2/m 2/m 2/m)
Space group	Ccca
Unit cell	a = 13.83, b = 20.31, ; c = 5.13 [Å]; Z = 8
Identification
Color	Yellow
Crystal habit	Prismatic, acicular to fibrous clusters
Twinning	On {100}
Cleavage	Perfect on {010}
Tenacity	Brittle
Mohs scale hardness	5.5-6
Luster	Silky
Diaphaneity	Translucent
Specific gravity	2.935-3.031
Optical properties	Biaxial (-)
Refractive index	nα = 1.610 nβ = 1.628 ; nγ = 1.630
Birefringence	δ = 0.020
Pleochroism	Distinct; X = Y = pale yellow; ; Z = colorless
References

Carpholite is a manganese silicate mineral with formula Mn²⁺Al₂Si₂O₆(OH)₄. It occurs as yellow clusters of slender prisms or needles. It crystallizes in the orthorhombic system.

The carpholite group includes ferrocarpholite, magnesiocarpholite, vanadiocarpholite, and potassiccarpholite.

^ Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.
^ Handbook of Mineralogy
^ Carpholite on Mindat.org
^ Carpholite on Webmineral

[1] Warr, L.N. (2021). "IMA–CNMNC approved mineral symbols". Mineralogical Magazine. 85 (3): 291–320. Bibcode:2021MinM...85..291W. doi:10.1180/mgm.2021.43. S2CID 235729616.

[HBM-2] Handbook of Mineralogy

[Mindat-3] Carpholite on Mindat.org

[Webmin-4] Carpholite on Webmineral

Carpholite information

and 10 Related for: Carpholite information

Carpholite

List of minerals

List of mineral symbols

Blueschist

Metamorphic facies

Carpolite

Vanadiocarpholite

Petrogenetic grid

John Leslie Jambor

Josef Johann Steinmann