1. 
   feldspar
   Any of a group of silicate minerals. Feldspars are the most abundant mineral type in the Earth's crust. They are the chief constituents of igneous rock and are present in most metamorphic and sedimentary rocks. All feldspars contain silicon, aluminium, and oxygen, linked together to form a framew......
   Found op http://www.talktalk.co.uk/reference/encyclopaedia/hutchinson/m0015242.html
   
   
2. 
   feldspar
   [n] - any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
   Found op http://www.webdictionary.co.uk/definition.php?query=feldspar
   
   
3. 
   Feldspar
   Feldspars are the most abundant of the rock forming minerals. They can be found in most igneous and metamorphic rocks.
   Found op http://www.digitalstroud.co.uk/glossary.php?glossgroup=W-Z
   
   
4. 
   feldspar
   felspar noun any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=feldspar
   
   
5. 
   Feldspar
   • (n.) Alt. of Feldspath
   Found op http://thinkexist.com/dictionary/meaning/feldspar/
   
   
6. 
   feldspar
   any of a group of aluminosilicate minerals that contain calcium, sodium, or potassium. Feldspars make up more than half the Earth`s crust, and ... [15 related articles]
   Found op http://www.britannica.com/eb/a-z/f/15
   
   
7. 
   Feldspar
   Feldspars crystallize from magma in both intrusive and extrusive igneous rocks, as veins, and are also present in many types of metamorphic rock. Rock formed almost entirely of calcic plagioclase feldspar (see below) is known as anorthosite. Feldspars are also found in many types of sedimentary roc...
   Found op http://en.wikipedia.org/wiki/Feldspar
   
   
8. 
   Feldspar
   A group of common aluminum silicate minerals that contains potassium, sodium, or calcium.
   Found op http://www.physicalgeography.net/physgeoglos/f.html
   
   
9. 
   feldspar
   Plagioclase feldspar Any of a group of rock-forming, aluminosilicate (containing aluminum and silicon) minerals that also contain one or two of the following metals: calcium, sodium, potassium, and, rarely, barium. Potash feldspars, principally orthoclase and microcline, are potassium aluminum ...
   Found op http://www.daviddarling.info/encyclopedia/F/feldspar.html
   
   
10. 
    feldspar
    feldspar (fel'spär, feld'–) or felspar (fel'spär) , an abundant group of rock-forming minerals which constitute 60% of the earth's crust. Chemically the feldspars are silicates of aluminum, containing sodium, potassium, iron, calcium, or barium or combinations of these el...
    Found op http://www.infoplease.com/ce6/sci/A0818415.html
    
    
11. 
    Feldspar
    Feldspar or felspar is a name given to a group of minerals, closely related in crystalline form, and all silicates of alumina with either potash, soda, lime, or, in one case, baryta. They occur in crystals and crystalline masses, vitreous in lustre, and breaking rather easily in two directions at ri...
    Found op http://www.probertencyclopaedia.com/browse/HF.HTM
    
    
12. 
    feldspar
    1) Crystalline mineral 2) Felspar 3) Igneous rock constituent 4) Important constituent of igneous rocks 5) Mineral that crystallizes from magma 6) Spar
    Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/feldspar/1
    
    

Tip: double click on a word to show its meaning.