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MINERAL SPECIMENS FOR DISPLAY

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MI-1441

MI1442

MI1443

MI-1444

MILLERITE
Perseverance Mine, 37 Km NE of Agnew, W.A., Australia
Discovered circa 1971, the Perseverance Mine is reported to be one of the largest nickel sulfide deposits in the world.  The four specimens illustrated here were mined in 2004.  Each has a rounded, botryoidal surface with excellent luster and brassy-bronze color.  The botryoidal forms are each composed of many hundreds of radiating, acicular Millerite crystals with the intergrown terminations of the individual crystals forming the botryoidal surface.  The main botryoidal form on MI-1444 is 1 3/8” X 1 1/4” across – a really stunning example!  None of the specimens have matrix.

ITEM
NUMBER
MI-

SPECIMEN SIZE
(INCHES)

SPECIMEN
PRICE

1441

3/4

1/2+

1/2

SOLD

1442

3/4

5/8+

1/2+

SOLD

1443

7/8

7/8

5/8

SOLD

1444

1 3/4

1 3/8

1

$ 250.00

 

BARITE, CALCITE
Minerva #1 Mine, Hardin County, Illinois|
Group of many intergrown, double terminated white Barite xls. to 1 1/2” across, with several small scalenohedral Calcite xls. at the base.  On the back of the xl. group, the Barite xls. are also fully double terminated.  No matrix.  William Jacobs collection. UV fluorescence: SW & LW weak yellow-white.  Phos: SW & LW white, long-lasting in SW.
Specimen size:   1 5/8” wide, 1 1/4” tall, 1 1/8” thick
Order Item:  MI-1245 
Price:  $34.50

CALCITE on QUARTZ
Concepcion del Oro, State of Zacatecas, Mexico
For the Calcite locality specialist, this attractive “miniature” size specimen consists of a cluster of many intergrown, sparkly, light pink-lavender color Calcite crystals , formed as a secondary deposition on top of and almost completely covering a small group of Quartz crystals.  From the F. Marshall collection, this specimen is #138 – one of the earliest numbered specimens in the collection, purchased in 1965.  The original label is from Schneider’s Minerals, Poway, California.
Specimen size:  1 3/4” tall, 1 1/4” wide, and 1 1/8” thick
Order Item MI-1177              Price:  $45.00

ELBAITE TOURMALINE
Malkhane Pegmatite Field, near Kraniy Chikoy, Chita Oblast, Central Transbaikal Region, Russia
Specimens from this deposit have been available for 8-10 years.  This single crystal has three color zones.  The termination is a medium rose pink color, followed in the center of the crystal by a zone of lighter pink, then reverting back to the medium rose pink color at the base.  The termination is a typical flat top habit, with slightly beveled corners.  One of the corners has a small damaged area, and there is evidence that a tiny Quartz crystal was in contact with the termination in the pocket, during growth.  The prism faces are very sharp, and striated.  No matrix.
Specimen size:  1 1/8” tall, and 5/8” X 1/2” in cross section
Order Item MI-1170            SOLD 

ELBAITE TOURMALINE on BERYL Var. Aquamarine
Erongo Mountains, Namibia
A brief mention of a find of Aquamarine crystals with Tourmaline inclusions appears in the “Mineralogical Record”, Sept-Oct 1988, P. 337.  Actually, the Erongo Mountains occurrence of prismatic Tourmaline associated with, as well as included within Aquamarine crystals, has been known since the 1970’s, and quite possibly a lot earlier than that time.  This single, pale aqua color hexagonal crystal of Beryl Var. Aquamarine has lots of dark green secondary Elbaite Tourmaline crystal prisms formed upon the prism faces, and completely covering the termination.  The back of the Beryl crystal has a small contact point where another Beryl crystal was touching, during growth.  No matrix.  F. Marshall collection.
Specimen size:  1”+ (27 mm) tall, and +/- 1/4” in cross section (8 X 7 mm)
Order Item MI-1174              Price:  $30.00

BARITE
Wet Grooves Mine, near Ashrigg, Wensleydale, N. Yorkshire, England
Very nice large miniature size specimen composed of a group of colorless to white Barite xls. on  xline-massive Quartz  and Sphalerite matrix. 
Specimen size:  2” tall, and 1 1/2” X 1 1/2” in cross section.
Order Item:  MI-1246
Price:  $40.00

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