Xiangping, Gu, Xiande, Xie, Xiangbin, Wu, Guchang, Zhu, Jianqing, Lai, Kenich, Hoshino, Jiwu, Huang (2013) Ferrisepiolite: a new mineral from Saishitang copper skarn deposit in Xinghai County, Qinghai Province, China. European Journal of Mineralogy, 25 (2) 177-186 doi:10.1127/0935-1221/2013/0025-2262

Classification of FerrisepioliteHide

Strunz-mindat (2024):

9.00.

9 : SILICATES (Germanates)
0 :
0 :

Mineral SymbolsHide

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

Please only use the official IMA–CNMNC symbol. Older variants are listed for historical use only.

Symbol	Source	Reference
Fsep	IMA–CNMNC	Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43
Fsep	Warr (2020)	Warr, L.N. (2020) Recommended abbreviations for the names of clay minerals and associated phases. Clay Minerals, 55, 261–264 doi:10.1180/clm.2020.30

Physical Properties of FerrisepioliteHide

Lustre:

Earthy

Colour:

Brown to red-brown

Streak:

Brown-white

Hardness:

2 - 2½ on Mohs scale

Density:

2.51 - 2.69 g/cm³ (Measured)

Chemistry of FerrisepioliteHide

Mindat Formula:

(Fe³⁺,Fe²⁺,Mg)₄((Si,Fe³⁺)₆O₁₅)(O,OH)₂ · 6H₂O

Elements listed:

Fe, H, Mg, O, Si - search for minerals with similar chemistry

Crystallography of FerrisepioliteHide

Crystal System:

Orthorhombic

Class (H-M):

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

Cell Parameters:

a = 13.467(16) Å, b = 26.953(41) Å, c = 5.226(17) Å

Ratio:

a:b:c = 0.5 : 1 : 0.194

Unit Cell V:

1,896.91 Å³ (Calculated from Unit Cell)

Comment:

Space group Pncn.

X-Ray Powder DiffractionHide

Powder Diffraction Data:

d-spacing	Intensity
12.034 Å	(100)
4.468 Å	(5)
3.742 Å	(6)
3.378 Å	(31)
3.184 Å	(4)
2.704 Å	(6)
2.552 Å	(5)
2.060 Å	(4)

Geological EnvironmentHide

Paragenetic Mode(s):

Paragenetic Mode	Earliest Age (Ga)
Stage 7: Great Oxidation Event	<2.4
47a : [Near-surface hydration of prior minerals]

Type Occurrence of FerrisepioliteHide

Type Locality:

ⓘ Saishitang Mine (Saishentang Mine; Sashitang Mine), Xinghai County, Hainan, Qinghai, China

General Appearance of Type Material:

Brown earthy and fibrous aggregates with an appearance of wood bark, consisting of fibrous crystals several micrometers wide and several centimeters long. Also as brown earthy mass consisting of individual grains of flaky-acicular microlites with poor crystallinity, a few micrometers or less in size.

Place of Conservation of Type Material:

Geological Museum of China with catalog number M11786.

Geological Setting of Type Material:

Late-stage veinlets in copper-sulphide ores hosted in layered hedenbergite-andradite-actinolite skarn. Highly oxidizing environment from low-temperature Fe-rich fluids and crystallized in cavities and fractures within the skarn-ore deposit.

Associated Minerals at Type Locality:

Reference:

Gu, X., Xie, X., Wu, X., Zhu, G., Lai, J., Hoshino, K., Huang, J. (2013) Ferrisepiolite: a new mineral from Saishitang copper skarn deposit in Xinghai County, Qinghai Province, China. European Journal of Mineralogy: 25(2): 177–186.

Download:

https://rruff.info/rruff_1.0/uploads/EJM25_177.pdf

Synonyms of FerrisepioliteHide

IMA2010-061

Other Language Names for FerrisepioliteHide

German:Ferrisepiolith

Simplified Chinese:铁海泡石

Relationship of Ferrisepiolite to other SpeciesHide

Member of:

Sepiolite Group

Other Members of this group:

Falcondoite	(Ni,Mg)₄Si₆O₁₅(OH)₂ · 6H₂O	Orth.
Loughlinite	Na₂Mg₃Si₆O₁₆ · 8H₂O	Orth. mmm (2/m 2/m 2/m)
Sepiolite	Mg₄(Si₆O₁₅)(OH)₂ · 6H₂O	Orth. mmm (2/m 2/m 2/m) : Pnna

Related Minerals - Strunz-mindat Grouping Hide

9.00.	Clino-ferri-holmquistite	◻{Li₂}{Mg₃Fe³⁺₂}(Si₈O₂₂)(OH)₂	Mon. 2/m : B2/m
9.00.	Shkatulkalita
9.00.	Alflarsenite	NaCa₂Be₃Si₄O₁₃(OH) · 2H₂O	Mon. 2 : P2₁
9.00.	Yegorovite	Na₄[Si₄O₈(OH)₄] · 7H₂O	Mon. 2/m : P2₁/b
9.00.	Ferroericssonite	BaFe²⁺₂ Fe³⁺(Si₂O₇)O(OH)	Mon. 2/m : B2/m
9.00.	Zvyaginite	NaZnNb₂Ti[Si₂O₇]₂₀(OH,F)₃(H₂O)₄ + (x < 1)	Tric. 1 : P1
9.00.	Burnettite	CaVAlSiO₆	Mon. 2/m : B2/b
9.00.	Mendigite	Mn₂Mn₂MnCa(Si₃O₉)₂	Tric. 1 : P1
9.00.	Bridgmanite Subgroup	ABSiO₃
9.00.20	Rinkite-(Ce)	(Ca₃Ce)Na(NaCa)Ti(Si₂O₇)₂(OF)F₂	Mon. 2/m : P2₁/b

Other InformationHide

Magnetism:

Non-Magnetic

Notes:

Does not dissolve in dilute hydrochloric acid.

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 FerrisepioliteHide

mindat.org URL:

https://www.mindat.org/min-41139.html
Please feel free to link to this page.

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External Links:

Look for Ferrisepiolite on Webmineral

Look for Ferrisepiolite on Wikipedia

Look for Ferrisepiolite on Mineralien Atlas

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 FerrisepioliteHide

Reference List:

Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2011) New minerals and nomenclature modifications approved in 2010, CNMNC Newsletter No 7. Mineralogical Magazine, 75 (1) 27-31 doi:10.1180/minmag.2011.075.1.27

(2023) Ferrisepiolite. Handbook of Mineralogy. Mineralogical Society of America

Localities for FerrisepioliteHide

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.


Belarus
Mogilev Region Babruysk District ⓘ Bobruisk Ring Structure	Levitskiy et al. (2018, July)

China
Inner Mongolia Baotou City (Baotou Prefecture) Bayan Obo mining district Bayan Obo ⓘ Bayan Obo deposit	Qingchang Meng (1981)
Qinghai Hainan Xinghai County ⓘ Saishitang Mine (Saishentang Mine; Sashitang Mine) (TL)	Williams et al. (2011) +1 other reference

Italy
Campania Naples Somma-Vesuvius Complex Mount Somma Ercolano San Vito ⓘ San Vito Quarry	Imma Punzo find & collection

Russia
Murmansk Oblast Lovozersky District Alluaiv Mountain ⓘ Umbozero mine	Pavel.M. Kartashov (n.d.)
ⓘ Selsurt Mountain	Nikita Chukanov analytical data

Slovakia
Prešov Region Vranov nad Topľou District Vechec ⓘ Vechec quarry	Ďuďa et al. (1993)

Ferrisepiolite

About FerrisepioliteHide

Unique IdentifiersHide

IMA Classification of FerrisepioliteHide