Locality
Information
about crystals/mineral specimens from this location
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This
is an eye-catching specimen of gemmy DATOLITE - CaBSiO4 (OH)
from the Roncari Quarry in East Granby, CT. I
collected this specimen back in the early 1990s, then sold it to noted
New England mineral collector Frank J. Murphy. It came back to me at
an auction of material from his collection in 2013.
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Mineralogy
Facts
about gems, rocks and minerals
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The
Datolite Group which is also known as the datolite/gadolinite Group
after its two most common members is composed of similarly structured
nesosilicates. Its members contain alternating borate tetrahedrons,
B(O, OH)4, and silicate tetrahedrons, SiO4, that are connected to each
other in a sheet like structure. Between the tetrahedral sheets and
linking the tetrahedral sheets are metal cations in 8 coordination.
Despite the layered structure, cleavage is all but completely absent.
Some members have beryllium instead of boron in the non-silicate tetrahedrons.
Several members have rare earth metals as part of their compositions.
The general formula for the Datolite Group is approximately: X(B, Be)SiO4(OH,
O). The X ion can be either calcium, magnesium, cerium, lanthanum, iron,
tin, niobium, yttrium, ytterbium and/or erbium.
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Metaphysics
Information
about crystal, gem and mineral metaphysics and healing
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People
interested in metaphysics and crystal healing tell us that datolite
is used to increase stature and respect. It can help with problem solving,
and with remembering significant details. It can also instill an understanding
of transience in those experiencing change. Datolite can be used in
treating diabetes and hypoglycemia, and is useful for enhancing memory.
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