Minerals F - H

Location: Brazil, Russia, Zimbabwe, India
Variety of: Muscovite 
Chemical Composition: KAl2(AlSi3O10)(F, OH)2, Potassium aluminum silicate hydroxide fluoride
Hardness: 2 - 3

 

Garnet

Location: India, South Africa, Sri Lanka, China, Madagascar, Brazil, USA, & more
General garnet composition: A3B2(SiO4)3, where Ca, Mg, Fe2+, or Mn2+ occupy the A site, and the B site contains Al, Fe3+ or Cr3+. Hydrous garnets may contain up to 8.5% H2O. 
Hardness: 6.5 - 7.5

 

Gold

 

Location: Worldwide, most from China, India, Australia, and South Africa
Chemical Composition: Au
Hardness: 2 - 3

 

Halite

Location: USA (California, New York, Texas, Michigan, Louisiana), Poland, India, Canada
Vitreous pink, colorless, white, yellow, red, blue, and purple.
Chemical Composition: NaCl, Sodium Chloride
Hardness: 2

Location: Madagascar, Brazil, Nigeria, Ukraine
Variety of: Beryl
Chemical Composition: Be3 Al2 Si6 O18
Hardness: 7.5 - 8

Hematite

Hexogonal
Location: China, Brazil, Venezuela, Australia and South Africa, as well as across the U.S. and Canada
Chemical Composition: Fe2O3 Iron Oxide
Hardness: 5.5 - 6.5

Herkimer Diamond 

Location: NY, USA
Variety of: Quartz
Chemical composition: SiO2, silicon dioxide
Hardness: 7

Herkimer Diamond is a doubly terminated quartz crystal in its original form as facetted by nature. The best crystals with high brilliance, clarity, and surface luster approach a real diamond in appearance. Having originally been found in Little Falls, Herkimer County, NY determined the name.

Hiddenite

Location: Afghanistan, Pakistan, USA, Brazil, China, and Madagascar
Variety of: Spodumene
Chemical Composition: LiAl(SiO₃)₂
Hardness: 6.5 – 7

Hübnerite

Location: Arizona, California, Colorado, Idaho, Navada, New Mexico and South Dakota
Chemical Composition: MnWO4, Manganese tungstate
Hardness: 4 - 4.5