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Colourless, white, ...
Sub-Vitreous, Resinous, Waxy, Greasy
5½ - 6
Named by Edward S. Dana in 1888 in allusion to its composition, containing beryllium.
Structurally closely related to trimerite.

Visit for gemological information about Beryllonite.

Classification of Beryllonite

Approved, 'Grandfathered' (first described prior to 1959)

A : Phosphates, etc. without additional anions, without H2O
A : With small cations (some also with larger ones)
Dana 7th ed.:

1 : ABXO4

19 : Phosphates
3 : Phosphates of Be and Mg

Physical Properties of Beryllonite

Sub-Vitreous, Resinous, Waxy, Greasy
Diaphaneity (Transparency):
Transparent, Translucent
Pearly at times on {010}.
Colourless, white, rarely pale light yellow; colourless in transmitted light.
Hardness (Mohs):
5½ - 6
On {010} perfect; on {100} good but interrupted; on {101} poor; on {001}, in traces.
2.77 - 2.85 g/cm3 (Measured)    2.805 g/cm3 (Calculated)

Optical Data of Beryllonite

Biaxial (-)
RI values:
nα = 1.552 nβ = 1.558 nγ = 1.561
Measured: 68°
Max Birefringence:
δ = 0.009
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
weak to distinct r < v
Optical Extinction:
XYZ = bac
Fluid inclusions common.

Chemical Properties of Beryllonite

Elements listed in formula:

Crystallography of Beryllonite

Crystal System:
Class (H-M):
2/m - Prismatic
Space Group:
Space Group Setting:
Cell Parameters:
a = 8.178(3) Å, b = 7.818(3) Å, c = 14.114(6) Å
β = 90°
a:b:c = 1.046 : 1 : 1.805
Unit Cell Volume:
V 902.39 ų (Calculated from Unit Cell)
Crystals tabular {010} to short prismatic [010]. Crystals are frequently very complex, especially in the zones [100] and [010]. Faces in the zone [010] near {100} may be united in oscillatory combination. Crystal faces often dull or roughened, or, in some cases, delicately etched. Crystals frequently exhibit a columnar structure due to the presence of hollow canals and fluid cavities arranged parallel to [010].
On plane {101}, as both contact and penetration twins; repeated at times, or in pseudo-hexagonal stellate forms; also polysynthetic {110} and {100}.
Marked orthorhombic pseudo-symmetry.

Crystallographic forms of Beryllonite

Crystal Atlas:
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Beryllonite no.2 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by

Edge Lines | Miller Indicies | Axes

Opaque | Translucent | Transparent

Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
X-Ray Powder Diffraction Data:
3.90 (70)
3.62 (80)
3.61 (40)
2.82 (100)
2.35 (40)
2.25 (60)
Powder Diffraction (1993) 8:47; also ICDD 33-1213 (synthetic), 6-443.

Occurrences of Beryllonite

Type Occurrence of Beryllonite

Place of Conservation of Type Material:
Yale University, Connecticut 3.1946
Geological Setting of Type Material:
Granite Pegmatite

Relationship of Beryllonite to other Species

19.3.1MoraesiteBe2(PO4)(OH) · 4H2O
19.3.5GlucineCaBe4(PO4)2(OH)4 · 0.5H2O
19.3.6FransoletiteCa3Be2(PO4)2(HPO4)2 · 4H2O
19.3.7UraloliteCa2Be4(PO4)3(OH)3 · 5H2O
19.3.9PahasapaiteLi8(Ca,Li,K)10.5Be24(PO4)24 · 38H2O
19.3.10TiptopiteK2(Na,Ca)2Li3Be6(PO4)6(OH)2 · H2O
19.3.11GainesiteNa(Na,K)(Be,Li)Zr2(PO4)4 · 1.5-2H2O
19.3.12RoscheriteCa2Mn52+Be4(PO4)6(OH)4 · 6H2O
19.3.13FaheyiteBe2Mn2+Fe23+(PO4)4 · 6H2O
19.3.17NewberyiteMg(HPO4) · 3H2O
19.3.18PhosphorrössleriteMg(HPO4) · 7H2O
19.3.19BobierriteMg3(PO4)2 · 8H2O
19.3.20Barićite(Mg,Fe)3(PO4)2 · 8H2O
19.3.22Dittmarite(NH4)Mg(PO4) · H2O
19.3.23Struvite(NH4)Mg(PO4) · 6H2O
19.3.24Hannayite(NH4)2Mg3H4(PO4)4 · 8H2O

Other Names for Beryllonite

Name in Other Languages:
Simplified Chinese:磷钠铍石
Traditional Chinese:磷钠鈹石

Other Information

Other Information:
Slowly soluble in acids.

Alters to Herderite.
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 Beryllonite

Reference List:
Dana (1888) American Journal of Science: 36: 290.

Dana and Wells (1889) American Journal of Science: 37: 23.

Dana, E.S. (1892) System of Mineralogy, 6th. Edition, New York: 759.

Gaubert (1907) Bulletin de la Société française de Minéralogie: 30: 108.

Berman in: Palache and Shannon (1928) American Mineralogist: 13: 392.

Gossner and Besslein (1934) Centralblatt für Mineralogie, Geologie und Paleontologie, Stuttgart: 144.

Strunz (1937) Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 98: 76.

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.: 677-679.

Tschermaks Mineralogische und Petrographische Mitteilungen: 20: 1-12.

Internet Links for Beryllonite URL:
Please feel free to link to this page.
The following Beryllonite specimens are currently listed for sale on

Localities for Beryllonite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
  • Konar Province (Kunar Province; Konarh Province; Konarha Province; Nuristan)
    • Chapa Dara District
Rob Lavinsky specimen
  • Nuristan Province (Nurestan Province; Nooristan Province; Nuristan)
    • Kamdesh District
Lyckberg, P. (2011): Edelstein-Pegmatite in Afghanistan: Paprok. Mineralien-Welt. 22 (3): 46-57
  • Minas Gerais
    • Conselheiro Pena
Canadian Mlneralogist Vol. 20, pp. 87-89 (1982)
    • Divino das Laranjeiras
      • Linópolis
Handbook of Mineralogy Vol IV p64; Mineralogical Record 24: 384-385
Rob Lavinsky (from a new find in June 2011)
Atencio et al (2005) Roscherite-Group Minerals from Brazil, Axis (Min Rec), Vol 1, #6, p.1 (2005)
Mineralogical Record (2001) 32:249
    • Galiléia
      • Laranjeiras
[MinRec 12:69]
    • Itinga
      • Taquaral
Anthony, Bideaux, Bladh, Nichols: Handbook of Mineralogy, Vol. IV
        • Piauí Valley
Jordi Fabre
Luis Menezes
    • Mendes Pimentel
Sergio Varvello collection
  • Manitoba
Canadian Mineralogist: 40: 1339-1345.
  • Québec
    • Montérégie
      • La Vallée-du-Richelieu RCM
        • Mont Saint-Hilaire
HORVÁTH, L., and GAULT, R.G. (1990) The mineralogy of Mont Saint Hilaire. Mineralogical Record, 21, 284 359.
  • Jiangxi Province
    • Yichun Prefecture
      • Yuanzhou District
        • Yichun complex (Yashan batholith)
Desong Lin (1993): Mineral Resources and Geology 7(4), 262-266; Xudong Che, Rucheng Wang, Huan Hu, Wenlan Zhang, and Xiaolong Huang (2007): Acta Petrologica Sinica 23(6), 1552-1560
Czech Republic
  • Moravia (Mähren; Maehren)
    • Vysočina Region
      • Žďár nad Sázavou
Cempírek, J. & Novák, M.(2006) Beryllophosphate Assemblages From The Rožná Pegmatite, Czech Republic. Acta Miner.-Petrograph.,Abstract Series 5, Szeged, p.20
  • Western and Inner Finland Region
    • Orivesi
      • Eräjärvi area
Handbook of Mineralogy Vol IV p64; Sandström, F. & Lahti, S.I. (2009): Viitaniemipegmatiten i Eräjärvi, Orivesi, Finland. Litiofilen 26 (1): 11-38
  • Auvergne-Rhône-Alpes
    • Allier
      • Ébreuil
Charoy, B. (1999): Beryllium speciation in evolved granitic magmas. Phosphates versus silicates. European Journal of Mineralogy 11, 135-148.
  • Gilgit-Baltistan (Northern Areas)
    • Astor District (Astore District)
Dudley Blauwet et al. (2004), Pakistan: Minerals, Mountains & Majesty", Lapis International
    • Baltistan
      • Skardu District
        • Braldu Valley
Dudley Blauwet, Bill Smith and Carol Smith (2004) Table of mineral localities of the northern areas of Pakistan and other selected sites. (in "Pakistan: Minerals, Mountains & Majesty", Lapis International, East Hampton, Connecticut); Dudley Blauwet, Bill Smith and Carol Smith (2004) Table of mineral localities of the northern areas of Pakistan and other selected sites. (in "Pakistan: Minerals, Mountains & Majesty", Lapis International, East Hampton, Connecticut)
Blauwet, D., Smith, B., and Smith, C., 1997. A Guide to the Mineral Localities of the Northern Areas, Pakistan. Mineralogical Record 28(3), 183-200.
  • Viana do Castelo District
    • Ponte de Lima
      • Moreira do Lima
  • Östergötland
    • Norrköping
      • Kolmården
Nysten,P. & Gustafsson, L.(2006): I jakt på sällsynta mineral. Geologiskt forum nr 49, 22-25
  • Södermanland
    • Nynäshamn
      • Norrö
Langhof, J. , Jonsson, E. & Gustafsson, L. (2016): Sekundära Be-mineral i svenska granitpegmatiter-en översikt. Norsk Mineralsymposium 2016: 43-52
  • England
    • Devon
      • Okehampton area (Northern Dartmoor)
A. W. G. Kingsbury (1964), Mineral. Mag. 35, lvii; Peter G. Embrey (1978) Fourth Supplementary List of British Minerals. Mineralogical Magazine 42:169-177 (referring to Kingsbury); von Knorring, O., and Condliffe, E. (1984): On the occurrence of niobium-tantalum and other rare-element minerals in the Meldon aplite, Devonshire. Mineralogical Magazine 48, 443-448.;
  • Maine
    • Aroostook Co.
      • Monticello
Handbook of Mineralogy
    • Cumberland Co.
      • Baldwin
        • West Baldwin
Mineral News (2000) 16:1 pp1,4,5; Thompson et. al. (2000)
    • Oxford Co.
      • Greenwood
Kink, V. and Foord, E.E., 1992 Maine Mineralogy, Vol. 1, Maine Geologic Surevey, Augusta.; Mineralogical Record 22:382
        • Uncle Tom Mountain
"Maine Mineral Localities, 3rd Ed." by Thompson, W.B., 1998; Mineral News (1998) 14:8 pp2,9
      • Hebron
No reference listed
      • Newry
King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed.), 2000, Mineralogy of Maine, V. 2.; Mineralogical Record 22:382
King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.; Cameron, Eugene N.; and others (1954) Pegmatite investigations, 1942-45, in New England. USGS Professional Paper 255.
King, V. and Foord, E., 1994, Mineralogy of Maine, v. 1; King, V, 2006, Minerals of Halls Ridge and Plumbago-Puzzle Mountain, Newry, Oxford County, Maine, Mineral News, v. 22 (6), p. 1-3.
      • Rumford
"Maine Mineral Localities, 3rd Ed." by Thompson, W.B.,, 1998)
      • Stoneham
King, V. and Foord, E., 1994, 2000, Mineralogy of Maine.; Bastin, Edson Sunderland (1911) Geology of the pegmatites and associated rocks of Maine, including feldspar, quartz, mica, and gem deposits. USGS Bulletin 445.
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: 679; Nickel & Nichols, 1991 - "Mineral Reference Manual", p21.
"Maine Mineral Localities, 3rd Ed." by Thompson, W.B.,, 1998
King, V. and Foord, E., 1994, Mineralogy of Maine, v. 1.
    • Sagadahoc Co.
      • Georgetown
J,Nizamoff ef al, Rochester Mineralogical Symposium proceedings 2013
  • Nevada
    • Elko Co.
NBMG Bull 106 Geology and Mineral Resources of Elko County, Nevada; USGS Open-File Report 76-56
        • Alladin Group
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Hampshire
    • Cheshire Co.
      • Walpole
P. Cristofono, T. Mortimer, J.W. Nizamoff, A. Wilken, and R. Wilken (2011) The 38th Rochester Mineralogical Symposium, April 14-17, 2011, lecture abstracts, page 17-18.
    • Grafton Co.
      • Grafton
Bjareby, Gunnar (1965): Fifty Years of Mineral Collecting, Part 7 (Rocks & Minerals 40:491-493); 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
American Mineralogist: 37: 931-940.; Rocks & Minerals (2005) 80:242-261 New Hampshire Mineral Locality Index; American Mineralogist (1953): 38: 728-729.
  • New Mexico
    • Grant Co.
Northrup, Minerals of New Mexico, 3rd Rev. Ed., 1996
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