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Ericaite

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About EricaiteHide

Formula:
Fe2+3(B7O13)Cl
Hardness:
7 - 7½
Crystal System:
Orthorhombic
Member of:
Name:
From the flower known in English as heather, for its typical reddish color.
Dimorph of:
Boracite Group. Boracite-Ericaite Series. The Fe2+ analogue of Boracite and Chambersite. The orthorhombic dimorph of Congolite.


Classification of EricaiteHide

Approved, 'Grandfathered' (first described prior to 1959)
6.GA.05

6 : BORATES
G : Heptaborates and other megaborates
A : Tekto-heptaborates
25.6.1.2

25 : ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
6 : Hexaborates
10.1.20

10 : Borates with other anions
1 : Borates with halide

Physical Properties of EricaiteHide

Hardness:
7 - 7½ on Mohs scale

Optical Data of EricaiteHide

Type:
Biaxial (-)
RI values:
nα = 1.731 nβ = 1.755 nγ = 1.755
Max Birefringence:
δ = 0.024
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
r > v

Chemical Properties of EricaiteHide

Formula:
Fe2+3(B7O13)Cl
IMA Formula:
Fe2+3B7O13Cl
Common Impurities:
Mg,Mn(II)

Crystallography of EricaiteHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 8.58 Å, b = 8.65 Å, c = 12.17 Å
Ratio:
a:b:c = 0.992 : 1 : 1.407
Unit Cell V:
903.22 ų (Calculated from Unit Cell)

Type Occurrence of EricaiteHide

Other Language Names for EricaiteHide

German:Ericait
Spanish:Ericaita

Relationship of Ericaite to other SpeciesHide

Member of:
Other Members of this group:
BoraciteMg3(B7O13)ClOrth. mm2 : Pca21
ChambersiteMn2+3(B7O13)ClOrth. mm2 : Pca21
Congolite(Fe2+,Mg)3(B7O13)ClTrig. 3m : R3c
Trembathite(Mg,Fe)3(B7O13)ClTrig.
Forms a series with:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Boracite2 photos of Ericaite associated with Boracite on mindat.org.
Gypsum2 photos of Ericaite associated with Gypsum on mindat.org.
Magnesite2 photos of Ericaite associated with Magnesite on mindat.org.
Halite1 photo of Ericaite associated with Halite on mindat.org.
Anhydrite1 photo of Ericaite associated with Anhydrite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

6.GA.05BoraciteMg3(B7O13)ClOrth. mm2 : Pca21
6.GA.05ChambersiteMn2+3(B7O13)ClOrth. mm2 : Pca21
6.GA.10Congolite(Fe2+,Mg)3(B7O13)ClTrig. 3m : R3c
6.GA.10Trembathite(Mg,Fe)3(B7O13)ClTrig.
6.GA.30KorzhinskiteCa(B2O4) · H2O

Related Minerals - Dana Grouping (8th Ed.)Hide

25.6.1.1BoraciteMg3(B7O13)ClOrth. mm2 : Pca21
25.6.1.3ChambersiteMn2+3(B7O13)ClOrth. mm2 : Pca21

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

10.1.1TeepleiteNa2[B(OH)4]ClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
10.1.2BandyliteCu[B(OH)4]ClTet. 4/mmm (4/m 2/m 2/m) : P4/nmm
10.1.3BerboriteBe2(BO3)(OH,F) · H2OTrig.
10.1.4FluoboriteMg3(BO3)(F,OH)3Hex.
10.1.5BoraciteMg3(B7O13)ClOrth. mm2 : Pca21
10.1.6KarliteMg7(BO3)3(OH,Cl)5Orth.
10.1.7ShabyniteMg5(BO3)(OH)5(Cl,OH)2 · 4H2OMon.
10.1.8/9/10HilgarditeCa2B5O9Cl · H2OTric. 1 : P1
10.1.11SolongoiteCa2(H3B3O7)(OH)ClMon.
10.1.12HydrochlorboriteCa4B8O15Cl2 · 21H2OMon.
10.1.13EkateriniteCa2(B4O7)(Cl,OH)2 · 2H2OHex.
10.1.14VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2OTric. 1 : P1
10.1.15ChelkariteCaMgB2O4(Cl,OH)2 · 5H2O Or near, with Cl:OH = 3:1Orth.
10.1.16JohachidoliteCaAlB3O7Orth. mmm (2/m 2/m 2/m) : Cmma
10.1.17SatimoliteKNa2(Al5Mg2)[B12O18(OH)12](OH)6Cl4·4H2OTrig. 3m (3 2/m) : R3m
10.1.18ChambersiteMn2+3(B7O13)ClOrth. mm2 : Pca21
10.1.19Congolite(Fe2+,Mg)3(B7O13)ClTrig. 3m : R3c

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.
Industrial Uses:
none

References for EricaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
American Mineralogist (1956) 41: 372.
Grew, E.S., and Anovitz, L.M. (1996) BORON: Mineralogy, Petrology and Geochemistry, second edition, as revised (2002).

Internet Links for EricaiteHide

Localities for EricaiteHide

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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Bolivia
 
  • Cochabamba Department
    • Chapare Province
[MinRec 32:461] XRD and wet chemical analysis by Dr. Jaroslav Hyrsl, Karlovy Univ., Prague
Germany (TL)
 
  • Lower Saxony
    • Celle
      • Hänigsen
Aufschluss 1987(4), 120
      • Wathlingen
Weiss: "Mineralfundstellen, Deutschland West", Weise (Munich), 1990
  • Saxony-Anhalt
Wittern: "Mineralfundorte in Deutschland", 2001
  • Thuringia
    • Bleicherode
Horst, U. (1989): Der Aufschluss 40, 115-120
UK
 
  • England
    • North Yorkshire
      • Redcar and Cleveland
        • Loftus
[UK Journal of Mines and Minerals, No. 14 p7]; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
      • Scarborough
Smith, F.W., Dearlove, J.P.L., Kemp, S.J., Bell, C.P., Milne, C.J. and Pottas, T.L. (2014) Potash – Recent exploration developments in North Yorkshire. Pp. 45-50 in Hunger, E., Brown, T. J. and Lucas, G. (Eds.) Proceedings of the 17th Extractive Industry Geology Conference, EIG Conferences Ltd. 202pp
USA
 
  • Louisiana
    • Plaquemines Parish
R&M 72:3 p 192
Mineral and/or Locality  
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