Editing Feldspar (section)

==Production==
The [[USGS]] estimated global production of feldspar in 2020 to be 26 million tonnes, with the top four producing countries being: China 2 million tonnes; India 5 million tonnes; Italy 4 million; Turkey 7.6 million tonnes.<ref>Feldspar and Nepheline Syenite. U.S. Geological Survey, Mineral Commodity Summaries, January 2020</ref>

===Commercial grades===
Typical mineralogical and chemical analyses of three commercial grades used in ceramics are:<ref>Sugden, A. (2004). 'Feldspar Facts'. Ceramic Review, Issue 207, May/June 2004.</ref>
{| class="wikitable collapsible"
!width="80"|Product name !! Norfloat K !! Forshammar !! FFF K6
|-
!width="80"|Country
| Norway || Sweden || Finland
|-
!width="80"|Producing company
| North Cape || {{Ill|Sibelco|nl}} || Sibelco
|-
! 
|  ||  || 
|-
! Albite, %
| 23 || 40 || 41
|-
! Microcline, %
| 71 || 23 || 37
|-
! Anorthite, %
| 3 || — || 4
|-
! Quartz, %
| 3 || 33 || 8
|-
! 
|  ||  || 
|-
! SiO<sub>2</sub>, %
| 65.9 || 75.7 || 67.9
|-
! Al<sub>2</sub>O<sub>3</sub>, %
| 18.6 || 14.1 || 18.3
|-
! Fe<sub>2</sub>O<sub>3</sub>, %
| 0.07 || 0.15 || 0.11
|-
! TiO<sub>2</sub>, %
| — || 0.02 || 0.01
|-
! CaO, %
| 0.40 || 0.30 || 0.70
|-
! MgO, %
| — || 0.10 || 0.01
|-
! K<sub>2</sub>O, %
| 11.8 || 3.8 || 6.4
|-
! Na<sub>2</sub>O, %
| 2.9 || 5.0 || 5.5
|-
! LOI, %
| 0.2 || 0.5 || 0.2
|}