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Various minerals (M thru Z)- this section is now for TN thru CAB size.
The MM and MT size minerals are on their own page.
For an explanation of abbreviations used, please see our guide to mineral sizes.
Manganese Minerals - Harz Mountains, Germany. There must be at least four or five mineral species in each of these two specimens. There's probably rancieite, stilpnomelane, and pyrolusite at least. There are some colorless micro xtls in here, also. Much study to be had with a loupe or stereo scope, or simply display them as they are.
Two pieces for one price. Each piece is about 3 inches across largest dimension.
#CR274 .... $20.00
Pyrite - pseudomorphs after pyrrhotite, with pyrite xtls (pyritohedral), quartz micro xtls, and msv. sphalerite - Mina Noche Buena, Mun. de Mazapil, Zacatecas, Mexico. Size approx 3 1/2" across max. dimension. Pyritohedrons to 1/4" and flat xtln plates to 5/8". The main plates are intact, with a few smaller, side ones being only partial.
Nice
display specimen; difficult to capture adequately in a photograph.
Best appreciated
when
specimen can be rotated in the light to see the high 3-d relief and the
many,
many xtl faces.Specimen was collected in the 1960's or 70's. Ship wt. 2 lbs.
#CR224 ... $27.00
Siderite
& Calcite with "Stilpnosiderite"- near Knoxville,
Iowa. Rhombs of
siderite /
calcite with a lustrous black coating, most likely the form of hydrous
iron
oxides known as "stilpnosiderite", on a matrix of dark grey
limestone. Also known locally as "coal mine calcite". Very
interesting & unusual material obtained years ago from a coal strip
mine. Matrix is
ca. 5.5 x
5 x 3 cm; rhombic crystals are ca. 3-4 mm.#CR206 ... $19.00
Tourmaline crystals in
matrix - Minas Gerais, Brazil. 3 larger, green tourmalines to 5/8 inch
long,
one having a flat but somewhat rough termination where it turns from
green to
very pale pinkish ("watermelon tourmaline"), the other ones with
partial or broken ends, in a matrix of crystalline quartz. Many smaller
tourmalines also, with at least one perfect micro tourmaline (10x mag.)
showing
pink color and excellent termination. On the
back of the
specimen is a perfect, sharp octahedron of what appears to be magnetite,
just over 1/16 inch across.There are
also a couple
micro cubes of purple fluorite on here, and micro xtls of what
appear to
be lepidolite. The specimen is a real treat either with or
without
magnification.Ship wt. 0.8 lbs.
#CR223 ... $25.00
Willemite- Red Cloud Mine, Trigo Mtns.,
Yuma Co.,
AZ - 120' level. (This part of Yuma Co. is now La Paz Co.) A MIN
specimen of
fluorescent willemite micro xtls on matrix, with some micro wulfenites.
An
older David Shannon label indicates it was collected in February,
1976. Specimen has a lot to see with magnification, but can be
displayed fine
without. FL SW. #CR182 ... $15.00
Mininum Order is currently $15.00
The MM / MT size minerals are on their own page.
Minerals, A thru L
Catalog
Microminerals and Micromounts, A thru L
Microminerals and Micromounts, M thru Z
Minerals: Teaching, Reference, & Assortments
Minerals: Various, A-L
Premium / Display Minerals
Catalog
Main page
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