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Saturday Daily Feed, September 2, 2017. BLUE

The Rockhound Connection
and numerous quotes and images from my Facebook friends.
These are the images and quotes that appeal to my sensibilities or the lack thereof.


Enjoy!  R
>    Sorry folks for not keeping this up to date, but health issues, Congestive Heart Failure, has bedeviled the chef.


Lapis Lazula. Richard Nass
“Lapis lazuli (/ˈlæpɪs ˈlæzjuːli/, /-ˈlæzjuːl/), or lapis for short, is a deep blue metamorphic rock used as a semi-precious stone that has been prized since antiquity for its intense color.  H = 5.5 – 5.5.”  Wikipedia

Richard Nass For my Grand Finale for Blue Week, My lovely Hemimorphite
“Hemimorphite, is Zn4(Si2O7)(OH)2·H2O, a component of calamine. It is a sorosilicatemineral which has been historically mined from the upper parts of zinc and leadores, chiefly associated with smithsonite, ZnCO3.”  H = 4.5 – 5.0.  Wikipedia

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Fluorite, Sphalerite, and Calcite
Fluorite (also called fluorspar) is the mineral form of calcium fluoride, CaF2.  H = 4.”  Wikipedia

Spectrolite. 5.05 c. Finland.
“Spectrolite is an uncommon variety of labradoritefeldspar.”
“Labradorite ((Ca, Na)(Al, Si)4O8), a feldsparmineral, is an intermediate to calcic member of the plagioclase series. It has an anorthite percentage (%An) of between 50 and 70.  H = 6 -6.5.”  Wikipedia

Coober Pedy crystal opal from Dead Horse Gully Field with novaculite backing (doublet).  2013.  Dpulitzer
“Opal is a hydratedamorphous form of silica (SiO2·nH2O); its water content may range from 3 to 21% by weight, but is usually between 6 and 10%. Because of its amorphous character, it is classed as a mineraloid, unlike crystalline forms of silica, which are classed as minerals. H = 5.5 to 6.”  Wikipedia.

Blue amber from Dominican Republic. 2007.
“Amber is fossilized tree resin, which has been appreciated for its color and natural beauty since Neolithic times.”  Wikipedia

Azurite, cross-section through merged stalactites, Bisbee, Arizona.  2012. 
Tony Hisgett from Birmingham, UK
“Azurite is a soft, deep blue coppermineral produced by weathering of copper ore deposits.  H = 3.5-4.”  Wikipedia

“Big Blue”, a large turquoise specimen from the copper mine at Cananea, Sonora, Mexico. 2013.
Mike Beauregard from Nunavut, Canada
Turquoise is an opaque, blue-to-green mineral that is a hydrated phosphate of copper and aluminium, with the chemical formula CuAl6(PO4)4(OH)8·4H2O. It is rare and valuable in finer grades and has been prized as a gemstone and ornamental stone for thousands of years owing to its unique hue.  H = 5 – 6.”  Wikipedia


“Aquamarine (from Latin: aqua marina, being, water : sea, i.e.sea water,[8] marīna, from marīnus; of the sea.[9]) is a blue or cyan variety of

Mohs scale hardness 7.5–8″  Wikipedia

?     crysacolla?
Gorgeous Blue
Photo by: Richard Nass
“Chrysocolla is a hydrated copperphyllosilicatemineral with formula: Cu2−xAlx(H2−xSi2O5)(OH)4·nH2O (x<1)[1] or (Cu,Al)2H2Si2O5(OH)4·nH2O.[3]
Mohs scale hardness 2.5 – 3.5 ( or 7, high silica).”  Wikipedia

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