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Beaumontite (of Lévy)

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(Ca,Na)5(Si27Al9)O72 · 26H2O
Golden yellow, yellow brown
Vitreous, Sub-Vitreous, Pearly
3½ - 4
Specific Gravity:
Named in 1839 by M. Lévy in honor of Jean-Baptiste Elie de Beaumont [1798 - 1874], professor of geology at he the College de France. Beaumont co-authored the Geologic Map of France and was a researcher regarding the mechanics of mountain building. Beaumontite was re-investigated by Francis Alger in 1844 who discovered that the mineral was pseudo-orthorhombic and merely a crystallographic variant of heulandite.
A variety of Heulandite-Ca

Beaumontite differs from standard heulandite as a crystallographic variety with fewer crystal faces the result of which beumontite resembles an orthorhombic mineral with "right square prism". Most beaumontite, by coincidence, is generally golden yellow.

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Physical Properties of Beaumontite (of Lévy)Hide

Vitreous, Sub-Vitreous, Pearly
Transparent, Translucent
Golden yellow, yellow brown
3½ - 4 on Mohs scale
2.2 g/cm3 (Measured)    

Chemical Properties of Beaumontite (of Lévy)Hide

(Ca,Na)5(Si27Al9)O72 · 26H2O

First Recorded Occurrence of Beaumontite (of Lévy)Hide

General Appearance of First Recorded Material:
Pseudo-orthorhombic equant golden yellow crystals with a pearly face.
Geological Setting of First Recorded Material:
Fissure mineralization between gneiss and granite schlieren
Associated Minerals at First Recorded Locality:

Common AssociatesHide

Associated Minerals Based on Photo Data:
Haydenite1 photo of Beaumontite (of Lévy) associated with Haydenite on mindat.org.

Fluorescence of Beaumontite (of Lévy)Hide

Not fluorescent in UV

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.

References for Beaumontite (of Lévy)Hide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Levy, M. (1839) L'Institute (French Academy of Science), #313, p. 455.
Alger, Francis (1844) Beaumontite and Licolnite Identical with Heulandite, American Journal of Science, first series, v. 46 , p. 233-236.

Internet Links for Beaumontite (of Lévy)Hide

Localities for Beaumontite (of Lévy)Hide

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.
  • Maryland
    • Baltimore City
M. Levy (1839)
Mineral and/or Locality  
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