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reedmergnerite

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Reedmergnerite is a borosilicate mineral named in honor of Frank S. Reed and John L. Mergner. It is approved by the International Mineralogical Association but was first described prior to the association's formation, first published in 1955. Although it is approved, it got grandfathered, meaning the name reedmergnerite is still believed to refer to a valid species. Reedmergnerite has a synthetic potassium analogue.

Wikidata facts

Subclass of
feldspar
Image
Earth-and-Man--Reedmergnerite.jpg
Show 9 more facts
chemical formula
NaBSi₃O₈
Nickel-Strunz 9th edition (updated 2009)
9.FA.35
Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
9.FA.35
Commons category
Reedmergnerite
IMA Mineral Symbol
Rm
Mohs' hardness
6.3
density
2.776
Strunz 8th edition (series ID, updated)
VIII/F.03c – Anhang
Sources (1)

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Encyclopedic overview

3 sections
Contents
  • Properties
  • Environment and mining
  • References

{{Infobox mineral|boxbgcolor=#fff89c|image=Earth-and-Man--Reedmergnerite.jpg|formula=NaBSi3O8| IMAsymbol = Rm|strunz=9.FA.35|system=Triclinic|dana=76.1.4.1|class=Pinacoidal H-M Symbol: |symmetry=C|unit cell=587.34|molweight=246.05|color=Colorless to yellow-orange, salmon-orange|cleavage=Perfect on {001}|mohs=6 – 6.5|luster=Vitreous|opticalprop=Biaxial (−)|refractive=nα = 1.554 nβ = 1.565 nγ = 1.573|birefringence=0.019|2V=80°|dispersion=None|streak=White|density=2.776|diaphaneity=Transparent, translucent|impurities=Ti, Al, Fe, Mg, Ca, Ba, K, F, H2O, P}}

Reedmergnerite is a borosilicate mineral named in honor of Frank S. Reed and John L. Mergner. It is approved by the International Mineralogical Association but was first described prior to the association's formation, first published in 1955. Although it is approved, it got grandfathered, meaning the name reedmergnerite is still believed to refer to a valid species. Reedmergnerite has a synthetic potassium analogue.

Excerpted from Wikipedia’s “reedmergnerite” article, available under the CC BY-SA 4.0 licence.

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