Andrey S. Gorshkov's Photo Gallery

A3X-659Tokkoite K₂Ca₄[Si₇O₁₈(OH)](OH,F) , Charoite (K,Sr)_15-16(Ca,Na)₃₂[Si₆O₁₁(O,OH)₆]₂[Si₁₂O₁₈(O,OH)₁₂]₂[Si₁₇O₂₅(O,OH)₁₈]₂(OH,F)₄·~3H₂O

Murunskii Massif, Chara and Tokko Rivers Confluence, Aldan Shield, Russia

Dimensions: 11 cm x 7 cm x 1 cm

Токкоит образец and violet charoite.

HRD-583Orbicular Jasper

Kizil'skoe, Kizilsky District, Chelyabinsk Oblast, Russia

Dimensions: 110 mm x 110 mm x 10 mm

RN6-GALIce H₂O

Russia

Field of View: 200 mm

410-FXYNephrite

Gorlykgol mine, Eastern Sayan, Buryatia, Russia

Dimensions: 9 cm x 9 cm x 5 cm

DMX-TMQJadeite Na(Al,Fe³⁺)Si₂O₆

Itmurundy massif, Krasnyi Oktyabr', Aktogay District, Karaganda Region, Kazakhstan

Dimensions: 10 cm x 8 cm x 7 cm

N9W-5CHCalcite (Var: Glendonite) CaCO₃

Olenitsa River, White Sea Coast, Murmansk Oblast, Russia

Dimensions: 12 cm x 10 cm x 8 cm

217-KHHTinguaite

Khibiny Massif, Murmansk Oblast, Russia

Dimensions: 117 mm x 85 mm x 14 mm

LTC-L9HChalcopyrite CuFeS₂ , Sphalerite (Var: Marmatite) (Zn,Fe)S , Galena PbS

Nikolaevskiy Mine, Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai, Russia

Dimensions: 100 mm x 50 mm x 30 mm

Chalcopyrite epitaxy at marmatite and individual crystals growing on galena.

A7C-JNQCalcite CaCO₃

Minya Governorate, Egypt

Dimensions: 150 mm x 150 mm x 8 mm

Calcite with manganese oxide dendrites and may be manganoan calcite.
The quarries at Hatnub, just east of Minya, Nile Valley, Egypt have long produced dendritic calcite of this kind, with distinctive orange banding. Whether dendritic or not this stone is also known as calcite-alabaster and has been much prized for millennia. For a piece almost identical to this one look Gabriele Borghini (and others), Marmi Antichi, De Luca Editori d'Arte, 2021, p.140. There is still active quarrying at Minya today.

561-URXAntigorite (Var: Bowenite) Mg₃(Si₂O₅)(OH)₄

Russia

Dimensions: 10 cm x 5 cm x 3 cm
Field of View: 14.8 cm

Polished sample of transparent (up to 1 cm depth) Bowenite with minor inclusions of black Magnesiochromite with rims of Magnetite.
Andrey Gorshkov collection and photo.