bluestone


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

bluestone,

common name for the blue, crystalline heptahydrate of cupric sulfatecupric sulfate
or copper (II) sulfate,
chemical compound, CuSO4, taking the form of white rhombohedral crystals or amorphous powder. It decomposes at 650°C; to cupric oxide (CuO).
..... Click the link for more information.
 called chalcanthite, a minor ore of copper. It also refers to a fine-grained, light to dark colored blue-gray sandstonesandstone,
sedimentary rock formed by the cementing together of grains of sand. The usual cementing material in sandstone is calcium carbonate, iron oxides, or silica, and the hardness of sandstone varies according to the character of the cementing material; quartz sandstones
..... Click the link for more information.
. Deposits are extensively quarried as flagstone (paving stone) in New York and Pennsylvania and used commercially for buildings and paving stone.

bluestone

A dense fine-grained sandstone that splits easily along bedding planes to form thin slabs. See also: Stone

bluestone

[′blü‚stōn]
(mineralogy)
(petrology)
A sandstone that is highly argillaceous and of even texture and bedding.
The commercial name for a feldspathic sandstone that is dark bluish gray; it is easily split into thin slabs and used as flagstone.

bluestone

A hard, fine-grained, commonly feldspathic and micaceous sandstone or siltstone of dark greenish to bluish gray color that splits readily along bedding planes to form thin slabs; commonly used to pave surfaces for pedestrian traffic. A variety of flagstone.
References in periodicals archive ?
The cottages are wonderfully spacious, superbly equipped, and situated within the Bluestone village itself.
The Bluestones show that Government can intervene in ways that foster more opportunities for initiative and self-development, and they make a convincing case that our politics will remain stalemated without such basic reforms.
Bluestone's success is rooted in quality relationships with fiscally healthy lenders, investors and clients who have managed to avoid being hurt by the credit crisis," said Matthew McManus , Chairman, NAI Bluestone Real Estate Capital.
Prior to joining Bluestone, Barbara Ayotte oversaw the development and marketing of vacuum pumps and leak detectors in her role as a product manager at Alcatel Vacuum Products, Inc.
I am delighted to have the opportunity to work with an energy-conservation leader like Bluestone Energy," said Doug Jaeger.
To help with the increased demand, Ryan Blair, Bluestone Energy's Director of Project Management, will oversee the expansion of the division and will act as a facilitator for new supermarket projects.
Over the last two years, Bluestone Energy has grown a well-respected data center efficiency division, and I am excited to join," said Janet Ferry, Bluestone Energy's Director of Data Center Business Development.
Since opening up our Buffalo office last year, Bluestone Energy has seen countless opportunities for low ROI conservation projects," said Adam Fairbanks, Bluestone's Vice President of Business Development and Engineering.
We are delighted to be a part of ComEd's Efficiency Expo," said Ross Fairbanks, Manager of Bluestone Energy's Chicago office.
I am excited to join Bluestone Energy and am extremely impressed with the record growth Bluestone Energy has achieved over the last year," said Coy Stine, Bluestone Energy's Data Center Services Director.
I am thrilled with Bluestone's success for the last twenty years," said Peter Fairbanks, President of Bluestone Energy Services.