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Roscherite

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About RoscheriteHide

Formula:
Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O
Colour:
Brown, red, orange, greenish gray; yellowish green to brown in transmitted light
Lustre:
Sub-Vitreous, Resinous, Greasy
Hardness:
Specific Gravity:
2.90 - 2.97
Crystal System:
Monoclinic
Name:
Named in 1914 by František Slavik in honor of Mr. Woldemar Roscher [1866-1934], a pharmacist and mineral collector of Ehrenfriedersdorf, Saxony, Germany. Redefined as a beryllium-bearing mineral in 1958 by Marie Louise Lindberg.
Dimorph of:
Isostructural with:
Roscherite Group.

Occurs in cavities in granite or in complex zoned granitic pegmatites. Many roscherite localities are actually greifensteinite localities.


Classification of RoscheriteHide

Approved, 'Grandfathered' (first described prior to 1959)
8.DA.10

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
A : With small (and occasionally larger) cations
42.7.7.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
19.3.12

19 : Phosphates
3 : Phosphates of Be and Mg

Physical Properties of RoscheriteHide

Sub-Vitreous, Resinous, Greasy
Transparency:
Transparent, Translucent
Colour:
Brown, red, orange, greenish gray; yellowish green to brown in transmitted light
Comment:
May exhibit abnormal interference colours. Distinctly green roscherite may be iro-rich and be greifensteinite
Streak:
White
Hardness:
4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
n {001}, good; on {010}, distinct.
Fracture:
Splintery
Comment:
May be slintery due to radial fibrous aggregates
Density:
2.90 - 2.97 g/cm3 (Measured)    2.77(8) g/cm3 (Calculated)

Optical Data of RoscheriteHide

Type:
Biaxial (-)
RI values:
nα = 1.624 - 1.628 nβ = 1.639 - 1.644 nγ = 1.643 - 1.650
Birefringence:
0.020
Max Birefringence:
δ = 0.019 - 0.022
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
r > v very strong, crossed dispersion
Optical Extinction:
X=b, Y^c - -15°to 24°
Pleochroism:
Visible
Comments:
X = Yellow to olive green
Y = Yellow-brown, greenish brown
Z = Chestnut brown
Comments:
2V measured: large.

Chemical Properties of RoscheriteHide

Formula:
Ca2Mn2+5Be4(PO4)6(OH)4 · 6H2O

Crystallography of RoscheriteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 15.88 Å, b = 11.90 Å, c = 6.62 Å
β = 94.7°
Ratio:
a:b:c = 1.334 : 1 : 0.556
Unit Cell V:
1,246.79 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Short prismatic [001], with an eight-or six-sided cross section; also or flattened on {100} or {010} thin tabular, and elongated [010], with forms {010}, {110}, and {111}. Spherical to botryoidal aggregates and crusts with an internally firbous structure; pulverulent massive.
Comment:
Monoclinic Space Group: C2/c, β = 94°42'. May be triclinic with space group C-1, with a = 15.921, b = 11.965, c = 6.741. α = 91°04', β = 94°21', γ = 89°59.5'.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.51 (90)
5.95 (100)
4.84 (40)
3.17 (80)
3.08 (2b)
2.788 (60)
2.644 (40)
Comments:
Similar to zanazziite

Type Occurrence of RoscheriteHide

Place of Conservation of Type Material:
Charles University, Prague, Czech Republic: #6472. The Staatliche Naturhistorische Sammlungen Dresden
Natural History Museum, London, England: #1914,1381. U.S. National Museum of Natural History, Washington, D.C., USA: #R6219.
Geological Setting of Type Material:
Granite
Associated Minerals at Type Locality:

Other Language Names for RoscheriteHide

German:Roscherit
Simplified Chinese:水磷铍锰石
Spanish:Roscherita
Traditional Chinese:水磷鈹錳石

Relationship of Roscherite to other SpeciesHide

Other Members of this group:
AtencioiteCa2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O
FootemineiteCa2Mn2+Mn2+2Mn2+2Be4(PO4)6(OH)4 · 6H2OTric. 1 : P1
GreifensteiniteCa2Fe2+5Be4(PO4)6(OH)4 · 6H2OMon.
GuimarãesiteCa2Be4Zn5(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b
OkruschiteCa2Mn2+5Be4(AsO4)6(OH)4·6H2OMon. 2/m : B2/b
RuifrancoiteCa2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2OMon. 2/m : B2/b
ZanazziiteCa2Mg5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b

Common AssociatesHide

AlbiteNa(AlSi3O8)
BerylBe3Al2(Si6O18)
BerylloniteNaBePO4
FluorapatiteCa5(PO4)3F
HydroxylherderiteCaBe(PO4)(OH,F)
MoraesiteBe2(PO4)(OH) · 4H2O
MuscoviteKAl2(AlSi3O10)(OH)2
QuartzSiO2
Associated Minerals Based on Photo Data:
Childrenite42 photos of Roscherite associated with Childrenite on mindat.org.
Quartz12 photos of Roscherite associated with Quartz on mindat.org.
Eosphorite11 photos of Roscherite associated with Eosphorite on mindat.org.
Englishite5 photos of Roscherite associated with Englishite on mindat.org.
Albite4 photos of Roscherite associated with Albite on mindat.org.
Tiptopite4 photos of Roscherite associated with Tiptopite on mindat.org.
Strengite4 photos of Roscherite associated with Strengite on mindat.org.
Uralolite4 photos of Roscherite associated with Uralolite on mindat.org.
Moraesite3 photos of Roscherite associated with Moraesite on mindat.org.
Whiteite-(CaMnMg)3 photos of Roscherite associated with Whiteite-(CaMnMg) on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.DA.05BearsiteBe2(AsO4)(OH) · 4H2OMon.
8.DA.05MoraesiteBe2(PO4)(OH) · 4H2OMon.
8.DA.10ZanazziiteCa2Mg5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b
8.DA.10GreifensteiniteCa2Fe2+5Be4(PO4)6(OH)4 · 6H2OMon.
8.DA.10AtencioiteCa2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O
8.DA.10RuifrancoiteCa2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2OMon. 2/m : B2/b
8.DA.10GuimarãesiteCa2Be4Zn5(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b
8.DA.10FootemineiteCa2Mn2+Mn2+2Mn2+2Be4(PO4)6(OH)4 · 6H2OTric. 1 : P1
8.DA.15UraloliteCa2Be4(PO4)3(OH)3 · 5H2OMon.
8.DA.20WeinebeneiteCaBe3(PO4)2(OH)2 · 4H2OMon.
8.DA.25TiptopiteK2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2OHex.
8.DA.30Veszelyite(Cu,Zn)2Zn(PO4)2 · 2H2OMon. 2/m : P21/b
8.DA.35Kipushite(Cu,Zn)5Zn(PO4)2(OH)6 · H2OMon.
8.DA.35Philipsburgite(Cu,Zn)6(AsO4,PO4)2(OH)6 · H2OMon.
8.DA.40SpenceriteZn4(PO4)2(OH)2 · 3H2OMon. 2/m : P2/b
8.DA.45GlucineCaBe4(PO4)2(OH)4 · 0.5H2O
8.DA.50Ianbruceite[Zn2(OH)(H2O)(AsO4)](H2O)2Mon. 2/m : P21/b

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

42.7.7.3ZanazziiteCa2Mg5Be4(PO4)6(OH)4 · 6H2OMon. 2/m : B2/b
42.7.7.4RuifrancoiteCa2(◻,Mn)2(Fe3+,Mn,Mg)4Be4(PO4)6(OH)4(OH,H2O)2 · 4H2OMon. 2/m : B2/b

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

19.3.1MoraesiteBe2(PO4)(OH) · 4H2OMon.
19.3.2BerylloniteNaBePO4Mon. 2/m : P21/b
19.3.3HurlbutiteCaBe2(PO4)2Mon.
19.3.4HydroxylherderiteCaBe(PO4)(OH,F)Mon. 2/m : P21/b
19.3.5GlucineCaBe4(PO4)2(OH)4 · 0.5H2O
19.3.6FransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2OMon.
19.3.7UraloliteCa2Be4(PO4)3(OH)3 · 5H2OMon.
19.3.9PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2OIso. 2 3 : I2 3
19.3.10TiptopiteK2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2OHex.
19.3.11GainesiteNa(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2OTet. 4mm : I41md
19.3.13FaheyiteBe2Mn2+Fe3+2(PO4)4 · 6H2OTrig. 3 2 : P31 2 1
19.3.14FarringtoniteMg3(PO4)2Mon. 2/m
19.3.15HoltedahliteMg2(PO4)(OH)Trig. 3m : P3 1m
19.3.16AlthausiteMg4(PO4)2(OH,O)(F,☐)Orth. mmm (2/m 2/m 2/m) : Pnma
19.3.17NewberyiteMg(HPO4) · 3H2OOrth. mmm (2/m 2/m 2/m) : Pbca
19.3.18PhosphorrössleriteMg(HPO4) · 7H2OMon. 2/m : P2/b
19.3.19BobierriteMg3(PO4)2 · 8H2OMon. 2/m : B2/b
19.3.20Barićite(Mg,Fe)3(PO4)2 · 8H2OMon. 2/m : B2/m
19.3.21Panethite(Na,Ca)2(Mg,Fe2+)2(PO4)2Mon. 2/m : P21/b
19.3.22Dittmarite(NH4)Mg(PO4) · H2OOrth.
19.3.23Struvite(NH4)Mg(PO4) · 6H2OOrth. mm2
19.3.24Hannayite(NH4)2Mg3H4(PO4)4 · 8H2OTric. 1 : P1

Fluorescence of RoscheriteHide

Not fluorescent in UV

Other InformationHide

Notes:
Soluble in acids.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for RoscheriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Slavík (1914) Česká Akademie véd a umĕnē u Praze - Bull. intern. ac. sc. Bohême, no. 4.
Larsen, E.S. and Berman, H. (1934) The Microscopic Determination of the Nonopaque Minerals, Second edition, USGS Bulletin 848: 174.
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp.: 968-969.
Lindberg, M.L. (1958) The beryllium content of roscherite from the Sapucaia pegmatite mine, Minas Gerais, Brazil, and from other localities. American Mineralogist: 43: 824–838.
Fanfani, L., P.F. Zanazzi, and A.R. Zanzari (1977) The crystal structure of a triclinic roscherite. Tschermaks Mineral. Petrog. Mitt., 24, 169–178.
American Mineralogist (1978): 63: 427.
Clark, A.M., E.E. Fejer, A.G. Couper, O. von Knorring, R.W. Turner, and R.W. Barstow (1983) Iron-rich roscherite from Gunnislake, Cornwall. Mineralogical Magazine: 47: 81–83.
Leavens, P.B., J.S. White, and J.A. Nelen (1990) Zanazziite, a new mineral from Minas Gerais, Brazil. Mineralogical Record, 21, 413–417.
Tschermaks Mineralogische und Petrographische Mitteilungen: 22: 266-277. (for triclinic 'roscherite')
Anthony, J.W., Bideaux, R.A., Bladh, K.W., and Nichols, M.C. (2000) Handbook of Mineralogy, Volume IV. Arsenates, Phosphates, Vanadates. Mineral Data Publishing, Tucson, AZ, 680pp.: 504.
Rastsvetaeva, R.K., Chukanov, N.V., Verin, I.A. (2005): Crystal structure of roscherite. Doklady Chemistry, 403, 160-163.

Internet Links for RoscheriteHide

Localities for RoscheriteHide

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.
Austria
 
  • Carinthia
    • Koralpe
      • Moschkogel - Weinebene area
        • Brandrücken
G. Niedermayr, I. Praetzel: Mineralien Kärntens, 1995
Brazil
 
  • Minas Gerais
    • Água Boa
Dunn, P.J., Leavens, P.B., Sturman, B.D.,Gaines, R.V. & Barbosa, C. d. P. (1978): Hureaulite and Barbosalite from Lavra do Criminoso, Minas Gerais, Brazil. Mineralogical Record. 9: 147-151
    • Conselheiro Pena
Canadian Mlneralogist Vol. 20, pp. 87-89 (1982)
    • Divino das Laranjeiras
      • Linópolis
Cassedanne, J.P. (1983): Famous mineral localities: The Córrego Frio mine and vicinity, Minas Gerais, Brazil. Mineralogical Record, 14 (4): 227-237
    • Galiléia
      • Laranjeiras
[MinRec 12:69]
      • Sapucaia do Norte
Cassedanne, J.P. & Baptista, A. (1999): Famous Mineral Localities: The Sapucaia Pegmatite Minas Gerais, Brazil. Mineralogical Record, 30: 347-360 + 365.
    • Itinga
      • Jenipapo district
Roberto Bosi collection
      • Monte Belo
      • Taquaral
[MinRec 21:413]; Moore, P. B., & Ito, J. (1978). I, Whiteite, a new species, and a proposed nomenclature for the jahnsite-whiteite complex series; II, New data on xanthoxenite; III, Salmonsite discredited. Mineralogical Magazine, 42(323), 309-323.
Bulgaria
 
  • Haskovo Oblast (Khaskovo Oblast)
    • Mineralni Bani Obshtina
      • Spachievo ore field (Spahievo ore field)
http://www.bgd.bg/CONFERENCES/Conferencia_2004/pdf_files/Kunov.pdf
Germany (TL)
 
  • Saxony
    • Erzgebirge
      • Ehrenfriedersdorf
Slavik, F. (1914) Neue Phosphate vom Greifenstein bei Ehrenfriedersdorf. Bulletin international de l’ Académie des Sciences de Bohème: 19: 1-16.; Palache, C., Berman, H., and Frondel, C. (1951) The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 783, 969.; Handbook of Mineralogy (http://www.handbookofmineralogy.org/pdfs/lacroixite.pdf)
      • Schmiedeberg
Frank Zschäbitz, Walter Hajek, Roland Stenzel (2011) Neufunde von Kolbeckit, Hübnerit und Roscherit aus Sadisdorf, Sachsen. Lapis, 36, #7-8, 37-39.
Italy
 
  • Lombardy
    • Lecco Province
      • Colico
        • Piona Peninsula
Vignola, P., Fransolet, A.M., Guastoni, A. & Appiani, R. (2011). Le pegmatiti di Piona. Recenti studi sui filoni Malpensata, Luna e Sommafiume. Rivista Mineralogica Italiana, 1/2011, 30-38
Portugal
 
  • Guarda District
    • Sabugal
      • Bendada
Schnorrer-Köhler (1991), Mineral Occurrences.
UK
 
  • England
    • Cornwall
      • Calstock
        • Gunnislake
          • Clitters United Mines
Clark, A.M., Fejer, E.E., Couper, A.G., von Knorring, O., Turner, R.W., and Barstow, R.W. (1983): Mineralogical Magazine 47, 81-83; Golley, P., and Williams, R. (1995): Cornish Mineral Reference Manual. Endsleigh Publications (Truro), 104 pp.
USA
 
  • Connecticut
    • Middlesex Co.
      • East Hampton (Chatham)
        • Cobalt
Rocks & Min.: 70:403
  • Maine
    • Cumberland Co.
      • Baldwin
        • West Baldwin
Thompson, W.B., et,al., 2000, Rocks & Minerals, vol. 75, no. 6, pgs 408-418; Mineral News (2000) 16:1 pp1,4,5
    • Oxford Co.
      • Buckfield
King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1, King, V. (ed.), 2000, Mineralogy of Maine, V. 2.
      • Newry
Dunn, P.J. & Gaines, R.V. (1978): Uralolite from the Dunton Gem Mine, Newry, Maine: A second occurrence. Mineralogical Record 9(2), 99-100
King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2
King, V, 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, Oxford County, Maine, Mineral News, v. 22 (6), p. 1-3.
      • Paris
King, V. T. and Foord, E. E., 1994, Mineralogy of Maine, Descriptive Mineralogy, volume 1, Maine Geological Survey, Augusta, Maine, USA, pp. 418 + 88 plates. Mineralogical Record 22:382
      • Rumford
King & Foord, 1994. Mineralogy of Maine, V. 1.; King and Foord, 2000, Addenda to Volume 1, Mineralogy of Maine, v. 2.
  • New Hampshire
    • Grafton Co.
      • Alexandria
Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
      • Groton
Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
No reference listed
    • Sullivan Co.
      • Newport
Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index
  • North Carolina
    • Cleveland Co.
      • Kings Mountain District
Am Min 54 (1969), 1467-1469; Rocks and Minerals, (1985) 60:76-82; Carolina Geological Society Field Trip Guidebook 1981, 39-48
    • Gaston Co.
      • Bessemer City
Kenny Gay Collection
  • South Dakota
    • Custer Co.
      • Custer District
        • Fourmile
Rocks & Minerals: 60: 117; Rocks & Minerals: 79: 342.
  • Tennessee
    • Sevier Co.
      • East Fork District
        • East Fork Mine (East Fork manganese mine)
Travis A. Paris (2011) Tennessee mineral locality index. Rocks & Minerals, 86, #4, 300-328.
Mineral and/or Locality  
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