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Llanite is a porphyritic rhyolite with distinctive phenocrysts of blue quartz (a rare quartz color) and perthitic feldspar (light grayish-orangeish). The brown, fine-grained groundmass consists of very small quartz, feldspar, and biotite mica crystals.
The Delaware Mineralogical Society was founded in 1960. Its members have professional and hobbyist interests in geology, mineralogy, paleontology, and the lapidary arts. . Some members are professional scientists and educators, such as chemists, geologists, school teachers, and college profes
Opened in 1997, the museum's collections date to the 1930s with the museum housed in a home built to display the rock and mineral collections of the museum founders. The ranch-style home is listed on the National Register of Historic Places, the first of its kind listed in Oregon. In 2015 the museum became a Smithsonian Affiliate museum.
Poa pratensis, commonly known as Kentucky bluegrass (or blue grass), smooth meadow-grass, or common meadow-grass, is a perennial species of grass native to practically all of Europe, North Asia and the mountains of Algeria and Morocco.
Criteria for selecting crystallized mineral specimens for a display collection by Jack Halpern Reprint article, the Mineralogical Record, 2008; Tips for collecting minerals in the field, by the Mineralogical Society of America. Collector's Corner, at MSA; The American Federation of Mineral Societies, with links to regional and local clubs in ...
The New York Mineralogical Club, Inc. is the oldest continually-operating mineral club in the United States. [1] The club was founded by George Frederick Kunz , Benjamin B. Chamberlin and Professor Daniel S. Martin, on September 21, 1886, in the home of Professor Daniel S. Martin at 236 West 4th Street, New York City.
The Patricia is one of the few large gem-quality emeralds that remains uncut. [11] Also on display was the 563 carat (113 g) Star of India , the largest, and most famous, star sapphire in the world. It was discovered over 300 years ago in Sri Lanka , [ citation needed ] most likely in the sands of ancient river beds from where sapphires ...
Before European-American settlement, various cultures of Indigenous peoples of the Americas lived in the region. The pre-colonization state of the Bluegrass is poorly known, but it is thought to have been a type of savannah known as oak savanna, with open grassland containing clover, giant river cane (a type of bamboo), and scattered enormous trees, primarily bur oak, blue ash, Shumard's oak ...