Kushikino mine, Ichikikushikino City, Kagoshima Prefecture, Japan

Twinned crystal of Calcite. 38x17x21mm.

© Y.Okazaki

Dull dark grey to black masses in matrix. S357-20 0.5 cm field of view, vertical. Excalibur Mineral Company specimen.

© 2008, JGW

Dendrites. S357-18 0.3 cm field of view. Excalibur Mineral Company specimen.

© 2008, JGW

A cluster of butterfly twins. 4.5cm X 3.5cm X 2cm

© Geoffrey Krasnov

This specimen consists of a cluster of sharply twinned, lustrous, gemmy Calcite crystals from this locality famed for its choice butterfly-twinned Calcite. Ex. Lillian & Julian Reasenberg Collection No. 2445. Specimen measures 5.3cm x 3.86cm x 2.34cm.

© Jasun McAvoy & mineralman.com

This specimen consists of a cluster of sharply twinned, lustrous, gemmy Calcite crystals from this locality famed for its choice butterfly-twinned Calcite. Ex. Lillian & Julian Reasenberg Collection No. 2445. Specimen measures 5.3cm x 3.86cm x 2.34cm.

© Jasun McAvoy & mineralman.com

Contact twin of two elongate scalenohedral cristals of 50 mm of max size. Probaly twinning on (10-11). Visible for transparence in the right crystal a polysynthetic twinning on (01-12) Twinned minerals collection of Ferdinando Giovine

3.3 x 2.3 x 1.4 cm. A classic and beautiful, butterfly-twinned calcite from this famous, closed gold-silver mine. The transparency, glassiness and fine form make this a very fine example from this locale. I particularly like the different style of the terminations. Old-time material, rarely available. Specimen now in the collection of Sharon ...

© Rob Lavinsky & irocks.com

3.3 x 1.7 x 1.4 cm. A wonderful, well formed, gemmy to silky, nearly colorless "butterfly" twin of calcite from the Kushikino Mine. It's a very good quality toenail (too big to be a thumbnail) and one of only a few I have seen from this locality.

© Rob Lavinsky & irocks.com

Three-piece specimen of gold-silver ore containing naumannite. Accompanied by Hori Mineralogy label. Internal dimension of the tray: 81mm x 65mm

© R. Nakanishi

An exceptional colorless transparent twin crystal from this old Japanese mine, probably from the early 1900s. From: Keith Williams (Williams Minerals, Idaho Springs, Idaho), February 3, 1990. These are very rare, and we see very few Japanese minerals of this quality and style for sale. Alex Schauss had a large suite of calcite twins, and enjoyed ...

© Rob Lavinsky & iRocks.com

An attractively formed butterfly twin of Calcite, famous for this twinning habit at the Kushikino Mine, now a closed Japanese locality. The Calcite is clear and near colorless, and has a luster that suggests it may have been lightly acid etched to improve the luster. UV fluorescence: translucent orange, both SW and LW UV. Phosphorescence: ...

© Eugene & Sharon Cisneros

Sharp butterfly twin of Calcite from this historic Japanese locality for twinned Calcite crystals. The twin is partially colorless, with two tan color zones and a striped, vertically color zoned, pale smoky grey and white area on one side of the center of the twin. UV Fluorescence: translucent orange, both LW and SW UV. Phosphorescence: ...

© Eugene & Sharon Cisneros

A beautiful thumbnail-sized specimen of these attractive and well-known calcite twins from the Kushikino Mine. The piece shows the classic "butterfly" twinning habit which is synonymous with the locality. The piece is gemmy with a slick vitreous luster and is essentially colorless though a bit of dark brown coloring can be seen at the base. Ex ...

© Rob Lavinsky & MineralAuctions.com

This specimen originates from the Kushikino Mine (Mitsui Kushikino Mine), Ichikikushikino, Kagoshima Prefecture, Japan. It is dominated by massive quartz, occurring as a white to translucent aggregate with agate-like banding along the margins. Under ultraviolet illumination, certain areas exhibit distinct purple fluorescence. These luminescent ...

A beautiful thumbnail-sized specimen of these attractive and well-known calcite twins from the Kushikino Mine. The piece shows the classic "butterfly" twinning habit which is synonymous with the locality. The piece is gemmy with a slick vitreous luster and is essentially colorless though a bit of dark brown coloring can be seen at the base. Ex ...

© Rob Lavinsky & MineralAuctions.com