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About LeonharditeHide

Karl von Leonhard
CaAl2Si4O12 · 3H2O
Named by Johann Reinhard Blum in 1843 in honor of Karl Caesar von Leonhard [September 12, 1779, Rumpenheim bei Hanau, Germany - January 23, 1862, Heidelberg, Germany]. Von Leonard was variously a tax assessor and administrator of the Grand Duchy of Frankfurt. Eventually, he became Professor of mineralogy at the University of Heidelberg. One of von Leonhard's discourses involved the first concept of loess, its occurrence, and properties.
A variety of Laumontite

A name for partially dehydrated, opaque laumontite.

Classification of LeonharditeHide


Chemical Properties of LeonharditeHide

CaAl2Si4O12 · 3H2O

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 LeonharditeHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Coombs, D.S. (1952) Cell size, optical properties and chemical composition of laumontite and leonhardite. American Mineralogist: 37: 812-830.
Stolz, J. and Armbruster, T. (1997) X-ray single-crystal structure refinement of a Na, K-rich laumontite, originally designated "primary leonardite". Neues Jahrbuch für Mineralogie, Monatshefte, 1997: 131-144.
For further references, see laumontite.

Internet Links for LeonharditeHide

Localities for LeonharditeHide

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.
  • Irbid
    • Maqarin area
Khoury, H. N., Salameh, E., & Abdul-Jaber, Q. (1985). Characteristics of an unusual highly alkaline water from the Maqarin area, northern Jordan. Journal of Hydrology, 81(1), 79-91.
New Zealand
  • North Island
    • Taranaki Region
      • New Plymouth District
        • New Plymouth
Osborne Hutton, C. (1944) Some igneous rocks from the New Plymouth area, Transactions and proceedings of the Royal Society of New Zealand, 74:2, 125-153, 01 January 1944.
  • Pennsylvania
    • Berks Co.
      • Morgantown
Gilpin R. Robinson, Jr. and C. M. Sears (1992) Inventory of Metal Mines and Occurrences Associated with the early Mesozoic Basins of the Eastern United States II., USGS Open-File Report 92-448
Mineral and/or Locality  
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