• Jahnsite-(NaFeMg): Mineral information, data and localities.

    www.mindat.org/min-31994.html For the mineral jahnsite and its sodium, iron and magnesium content. The root name is in honor of Richard Henry Jahns (March 10, 1915 Los Angeles, California, USA - December 31, 1983 Palo Alto, California, USA), mineralogist and pegmatite expert, Stanford University, Palo Alto, California, USA.
  • Jahnsite-(NaFeMg) mineral information and data

    www.dakotamatrix.com/mineralpedia/8747/jahnsite-nafemg Jahnsite - (NaFeMg) occurs in at the Tip Top pegmatite west of Custer, South Dakota. Thus far it has been a one-time find. Crystals occur as 1mm pseudo-orthorhombic twinned prisms to 1mm in tiny vugs within Heterosite with dark purple Leucophosphite and Dufrenite.
  • Jahnsite-(NaFeMg) Mineral Data

    www.webmineral.com/data/Jahnsite-(NaFeMg).shtml General Jahnsite-(NaFeMg) Information : Chemical Formula: NaFe+++Mg2Fe+++2(PO4)4(OH)2•8H2O : Composition: Molecular Weight = 780.46 gm Sodium 2.12 % Na 2.86 % Na 2 O: Calcium 0.26 % Ca 0.36 % CaO: Magnesium 6.26 % Mg 10.38 % MgO: Manganese 0.28 % Mn 0.36 % MnO: Iron 19.46 % Fe 27.83 % Fe 2 O 3: Phosphorus 15.87 % P 36.37 % P 2 O 5
  • Jahnsite-(CaMnMg): Mineral information, data and localities.

    www.mindat.org/min-2067.html 5 photos of Jahnsite-(CaMnMg) associated with Muscovite: KAl 2 (AlSi 3 O 10)(OH) 2: 3 photos of Jahnsite-(CaMnMg) associated with Mitridatite: Ca 2 Fe 3+ 3 (PO 4) 3 O 2 · 3H 2 O: 2 photos of Jahnsite-(CaMnMg) associated with Leucophosphite: KFe 3+ 2 (PO 4) 2 (OH) · 2H 2 O: 2 photos of Jahnsite-(CaMnMg) associated with Jahnsite-(NaFeMg) NaFe 3 ...
  • Jahnsite-(NaFeMg) Mineral Specimen For Sale

    www.dakotamatrix.com/products/11508/jahnsite-nafemg Jahnsite-(Nafemg) - Several yellow, twinned, prismatic crystals of Jahnsite-(NaFeMg), the most recent new mineral from the Tip Top mine. It is a portion of the material used for the study, author's material, discovered by myself. The crystals are about 0.5mm with orange tips. There are probably 7 or 8 crystals in the photos shown and a few more on the backside.
  • Jahnsite-(CaMnFe): Mineral information, data and localities.

    www.mindat.org/min-2066.html Jahnsite Subgroup > Jahnsite Group Name: Named in 1974 by Paul (Paulus) Brian Moore and Takaharu Araki in honor of Richard Henry Jahns (March 10, 1915 Los Angeles, California, USA - December 31, 1983 Palo Alto, California, USA), mineralogist and pegmatite expert, Stanford University, Palo Alto, California, USA.
  • Jahnsite-(NaFeMg), a new mineral from the Tip Top mine ...

    www.minsocam.org/msa/ammin/toc/Abstracts/2008_Abstracts/.../Kampf_p940_08.pdf Jahnsite-(NaFeMg), a new mineral from the Tip Top mine, Custer County, South Dakota: Description and crystal structure ANTHONY R. KAMPF,1,* IAN M. STEELE,2 AND THOMAS A. LOOMIS3 1Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, Califoria 90007, U.S.A.
  • Jahnsite-(NaFeMg) from Tip Top Mine (Tip Top pegmatite ...

    www.mindat.org/locentry-469785.html ⓘ2 photos of Jahnsite-(NaFeMg) associated with Messelite at this locality. Data: Mineral Data: Click here to view Jahnsite-(NaFeMg) data: Locality Data: Click here to view Tip Top Mine (Tip Top pegmatite), Fourmile, Custer Mining District, Custer Co., South Dakota, USA
  • Jahnsite-(NaFeMg), a new mineral from the Tip Top mine ...

    www.researchgate.net/.../250130201_Jahnsite-NaFeMg_a_new_mineral_from_the_Tip... Jahnsite-(NaFeMg) is the first member of the whiteite-jahnsite group in which a monovalent cation (Na(+)) predominantly occupies the X site and a trivalent cation (Fe(3+)) the M1 site.
  • Jahnsite-(CaMnMn): Mineral information, data and localities.

    www.mindat.org/min-2068.html Named in 1990 by Joel Denison Grice, Pete J. Dunn, and Robert A. Ramik in honor of Richard Henry Jahns (March 10, 1915 Los Angeles, California, USA - December 31, 1983 Palo Alto, California, USA), mineralogist and pegmatite expert, Stanford University, Palo Alto, California, USA.