Eirikite from Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

MMC-MHGEirikite KNa₆Be₂(Si₁₅Al₃)O₃₉F₂

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 10 mm

colourless eirikite xls, EDX confirmed to distinguish from leifite

In Coll. M. Slama (ex Arnaldo Brunetti)

Canon EOS 250D with Canon MP-E 65mm f/2.8 1-5x, stacked from 26 Images using Zerene Stacker (Pmax)

P83-4WJEirikite KNa₆Be₂(Si₁₅Al₃)O₃₉F₂ , Leifite (Na,H₂O)Na₆[Be₂Al₂(Al,Si)Si₁₅O₃₉]F₂

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 8 mm

Intergrown sprays of eirikite and - almost certainly - it's sodium-dominant analogue, leifite.

ET4-84VEirikite KNa₆Be₂(Si₁₅Al₃)O₃₉F₂ , Leifite (Na,H₂O)Na₆[Be₂Al₂(Al,Si)Si₁₅O₃₉]F₂

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Dimensions: 24 mm x 14 mm x 12 mm
Field of View: 1.7 cm

White sprays of eirikite-leifite crystals.

4UW-9TPEirikite KNa₆Be₂(Si₁₅Al₃)O₃₉F₂ , Leifite (Na,H₂O)Na₆[Be₂Al₂(Al,Si)Si₁₅O₃₉]F₂ , Natrolite Na₂Al₂Si₃O₁₀·2H₂O , Polylithionite KLi₂Al(Si₄O₁₀)(F,OH)₂ , Rhodochrosite MnCO₃ , Catapleiite Na₂Zr(Si₃O₉)·2H₂O , Albite Na(AlSi₃O₈)

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Dimensions: 3.2 cm x 2.5 cm x 1.6 cm

Sprays of sharp white, prismatic, non-terminated Eirikite-Leifite crystals are on matrix composed of platy white Polylithionite, plus micro Natrolite, Catapleiite, Albite, and Rhodochrosite.
Personal collection of Sharon Cisneros.

1LK-6EXEirikite KNa₆Be₂(Si₁₅Al₃)O₃₉F₂ , Leifite (Na,H₂O)Na₆[Be₂Al₂(Al,Si)Si₁₅O₃₉]F₂

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 29.6 mm

FOV ca 3 x 3 cm. The greatest diameter is about 2.5 cm. MOB coll.

One of the moons of Jupiter as seen from the magic mountain.

According to László Horváth (private communication), a CMN specimen from this find was found to have both eirikite and leifite. (But this particular specimen has not been analyzed.)

Regarding the color: This is a rather deeply colored example from this find. The color is fairly accurate. See Lapis July-August 200 p. 11 for an even more deeply colored example.

00J-3RNEirikite KNa₆Be₂(Si₁₅Al₃)O₃₉F₂ , Rhodochrosite MnCO₃ , Gaidonnayite Na₂Zr(Si₃O₉)·2H₂O

Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada

Field of View: 2 mm

Eirikite (long white crystals). Rhodochrosite and Gaidonnayite not visible in this view.

Analyzed to differentiate between leifite and eirikite.

Photographed by and in the collection of Douglas Merson.
Obtained from László Horváth.