"As types of alabaster, gypsum and calcite have similar properties, such as light color, translucence, and soft stones that can be carved and
sculpted; thus the historical use and application of alabaster for the production of carved, decorative artefacts and objets d’art.[3] Calcite
alabaster also is known as onyx-marble, Egyptian alabaster, and Oriental alabaster, which terms usually describe either a compact, banded travertine
stone[2] or a stalagmitic limestone colored with swirling bands of cream and brown." https://en.wikipedia.org/wiki/Alabaster
[Edited on 15-1-2025 by Morgan]Admagistr - 15-1-2025 at 16:19
What might these ornamental eggs be made of? Marble or some sort of silicate or mix or something else? https://www.youtube.com/watch?v=OMM4JXUMRYY
[Edited on 15-1-2025 by Morgan]
It looks like aragonite from Pakistan, aragonite is chemically CaCO3, similar to marble, but probably the essence of the phenomenon is in the exact
shape that was cut from this aragonite...It is flowed by warm air and perhaps acts similar to an airplane wing to create movement...
[Edited on 16-1-2025 by Admagistr]Morgan - 15-1-2025 at 18:01
That could be where the marble eggs came from. When I was about 8 years old I lived on a USAF spy base where my parents might have bought them. I've
also tried using "Himalayan rock salt" from Pakistan which responds quite well as described here in PHILOSOPHICAL TRANSACTIONS by John Tyndall.
"Rock-salt.—1The rocker used in the foregoing experiment was laid aside and a piece of rock-salt was prepared for trial. The mass was cloven so as
to exhibit the surfaces of the primitive cube; and was so placed that the straight line formed by the intersection of two of the surfaces of the cube
was horizontal. Previous to heating the rocker, I laid it, according to practice, upon the mass, merely to ascertain whether the arrangement was
likely to answer. To my astonishment a deep musical sound commenced immediately. The temperature of the rocker was at this time far below that of
boiling water, and when it had ended its song it was scarcely above a blood heat."
"The heated rocker was laid upon a large boulder-shaped mass of the salt; it commenced to sing immediately. I scarcely know a substance, metallic or
non-metallic, with which vibrations can be obtained with greater ease and certainty than with this mineral. To the remarkable properties which the
researches of Melloni have shown to belong to rock-salt a new one may now be added."
My experiments are kind of humdrum but if interested in the topic, you can read about the effect and later other minerals tried starting on page 7.
That's interesting Morgan! I didn't know about this research...Morgan - 27-1-2025 at 19:42
An agate type rock of some sort I felt needed an eye. It's about 11 cm thick in spots and weighs perhaps 6 kilograms or so. Not all that colorful but
some closeup regions have a few interesting patterns.
An agate type rock of some sort I felt needed an eye. It's about 11 cm thick in spots and weighs perhaps 6 kilograms or so. Not all that colorful but
some closeup regions have a few interesting patterns.
It could be an agate derived from Cacholong. It could have a partially organogenic origin from dead prehistoric animals!Morgan - 28-1-2025 at 18:00
Not much zing with a black light. But wonder what formed the circle shapes, as seen on the backside of the rock in a previous post when enlarged. Not
the clustered bumpy nodules but the pebble or shell-like rounded impressions. Don't know much about geology ...
[Edited on 29-1-2025 by Morgan]Dr.Bob - 28-1-2025 at 18:28
I'd name that rock Bullwinkle...Morgan - 28-1-2025 at 19:15
I always liked that show and wry humor. "Tell me about the rabbits George!" (Steinbeck's novel Of Mice and Men) https://youtu.be/fUbKIQIh7G0?t=1239
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