Important Update News
The RRUFF Project (rruff.info) is being updated to improve its interface and content. The beta version of the update is accessible to the public at RRUFF.net. New data is only being added to the beta site. Please note that it is in development, and some components are not functional.
We are grateful to NASA for the funding of this effort.
![]() |
Name: Strengite RRUFF ID: R040177 Ideal Chemistry: Fe3+(PO4)·2H2O Locality: Plegstein, Oberpfalz, Bavaria, Germany Source: University of Arizona Mineral Museum 2450 [view label] Owner: RRUFF Description: Light purple crystals Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis. |
|
Quick search: [ All Strengite samples (2) ] |
CHEMISTRY | ||||||||
---|---|---|---|---|---|---|---|---|
![]() |
|
RAMAN SPECTRUM | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
|
POWDER DIFFRACTION | |||||||
---|---|---|---|---|---|---|---|
RRUFF ID: | R040177.9 | ||||||
Sample Description: | Single crystal, powder profile is calculated | ||||||
Cell Refinement Output: |
a: 8.710(4)Å b: 9.870(3)Å c: 10.110(5)Å alpha: 90° beta: 90° gamma: 90° Volume: 869.1(4)Å3 Crystal System: orthorhombic |
||||||
|
|
REFERENCES for Strengite | |
---|---|
American Mineralogist Crystal Structure Database Record: [view record] |
|
Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file] |
|
Nies A (1877) Strengit, ein neues Mineral, Neues Jahrbuch für Mineralogie, Geologie und Palaontologie, 1877, 8-16 [view file] |
|
Warry N D, Kramer J R (1976) Some factors affecting the synthesis of cryptocrystalline strengite from an amorphous phosphate complex, The Canadian Mineralogist, 14, 40-46 [view file] |
|
Bailey S W (1977) Report of the I.M.A-I.U.Cr. Joint Committee on Nomenclature, American Mineralogist, 62, 411-415 [view file] |
|
Frost R L, Weier M L, Erickson K L, Carmody O, Mills S J (2004) Raman spectroscopy of phosphates of the variscite mineral group, Journal of Raman Spectroscopy, 35, 1047-1055 [link] |
|
Taxer K, Bartl H (2004) On the dimorphy between the variscite and clinovariscite group: refined finestructural relationship of strengite and clinostrengite, Fe(PO4)·2H2O, Crystal Research and Technology, 39, 1080-1088 |
|
Oxmann J F, Pham Q H, Lara R J (2008) Quantification of individual phosphorus species in sediment: a sequential conversion and extraction method, European Journal of Soil Science, 59, 1177-1190 [view file] |
|
Dyar M D, Jawin E R, Breves E, Marchand G, Nelms M, Lane M D, Mertzman S A, Bish D L and Bishop J L (2014) Mössbauer parameters of iron in phosphate minerals: Implications for interpretation of martian data, American Mineralogist, 99, 914-942 [view file] |
|
Birch W D (2018) Minerals in the arrojadite, alluaudite and jahnsite-whiteite groups from the Mount Wills pegmatite field, Victoria, Australia, European Journal of Mineralogy, 30, 635-645 |
|
Markl G, Keim M F, Bayerl R (2019) Unusual mineral diversity in hydrothermal vein-type deposit: The Clara mine, SW Germany, as a type example, The Canadian Mineralogist, 57, 427-456 |
|
|