Nacaphite, Nefedovite

Specimen ID: 6R9-NX9

Mineral(s)
Nacaphite : Na2Ca(PO4)F
Nefedovite : Na5Ca4(PO4)4F
Locality
As recorded:
Olenii Ruchei, The Carbonatite Stock in the vicinity of Tul'ilukht Bay, Khibiny Massif, Murmansk Oblast, Russia
Mindat locality:
Events

Photo added to mindat.org

Modified by CombineZP This photo consists of 12 exposures at progressive focus increments of 200 microns. Image depth of field is approximately 2.4 mm. Camera: Nikon D90 body on a Zeiss Standard microscope frame. Objective: Nikon A2x/0.06na with an Olympus NFK 2.5x projective ocular. Purchased micromount specimen identified by seller. Method of identification is unknown. Clear grains of nefedovite.
Jesse Crawford - 3rd July 2016

Photo added to mindat.org

Nacaphite surrounded by nephedovite grains. This photo modified by Combine ZP. It consists of several exposures combined to improve depth of field. Camera: Nikon D3300 body on a Zeiss Standard microscope frame. Objective: Nikon A2x/0.06na with an Olympus NFK 2.5x projective ocular. Purchased micromount specimen. Component minerals identified by dealer. The two minerals are similar in chemistry but differ in hardness. Nacaphite is H3 while nefedovite is H4.5. The small mark just to the left of the center of the photo is a small scratch from a fragment of sphalerite, indicating a hardness of less than H3.5.
Jesse Crawford - 10th March 2017
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