276 



REPORT OF NATIONAL MUSEUM, 1895. 



Corundum [Al^Osl. 

 [Crystallization — Kliombohoilral.] 

 Belts Bridge, Iredell Comity, N. C. 



10 



TOUKMALINE, var. llUBELLITK [ AlIl'6BO2(Si04) J 



[Crystallization— Khombohedial.] 

 This mineral, with albite, AlNaSiaOj,, is present 

 as an Inclusion in lepidolite, Al2KLi(Si03)r2- 

 Runiford, Me. 



11 



Micaceous Hematite [FeaOs]. 



[Crystallization — Kbombohedral.] 



Marquette, Mich. 



Magnetite [Fe304]. 

 [Crystallization — Isometric] 

 This variety is known hy tlie miners as 

 ore." 



Mineville, Essex County, N". Y. 



Massive Feanklinite [ZnFe204]. 

 [ Crystallization — Isometric. ] 

 Trotter Mine, Franklin, N. J. 



^hot 

 13 



14 



Quaktz Crystals [SiO^]. 

 [Crystallization — Rhombohedral.] 

 Crystal Mountain, near Hot Springs, Ark. 15 



Quartz, var. Agatized Wood [SiOj]. 

 [ Crystallization— Ehombohedral. ] 

 Sections of this material are cut ti-ansversely 

 through the log into slabs, which are highly pol- 

 ished, and offered for sale, the best at as high a 

 price as $800. 



Chalcedony Park. Ariz. 16 



Amphibole, var. Acti.\oliie [(Ca, Mg) SiOa]. 



[Crystallization — Monoclinic.J 

 This mineral is associated with talc, MgsH, 

 (8103)4, as its matrix. 



Belts Bridge, Iredell County, N. C. 17 



Khodonite, var. Fowlekite [(Mn, Fe, ZnjSiO.,]. 



[Crystallization— Triclinic. ] 



Epidote, Al3(Ca, FejjHSisOij, and rothoftite, 



Ca3Feo(Si04):, a species of garnet, are present as 



inclusions in the fowlerite. 



Trotter Mine, Franklin, X. J. 18 



Beryl [ALGlsiSiO^Jel- 

 [Crystallization— Hexagonal.] 

 Ray's Mica Mine, Yancey County, N. C. 19 



"Willemite [Zn.^SiOj]. 



rCrystallization— Rhombohedral.] 



This mineral is associated with franklin ite, 



ZnF&/)4, and zincite, ZnO. Together they form 



one of the largest and most valuable deposits of 



zinc ore in the world. 



Taylor Mine, Franklin, K. J. 20 



Enstatitb, var. Bkonzite [(Mg, Fe)Si03]. 

 [Crystallization — Orthorlionibic.J 

 Webster, Jackson County, X. C. 21 



Lepidolite [ Al;;KLi(Si03)3F..,] . 

 [Crystallization — Mnnoclinic] 



Auburn, INIe. 22 



Albite [AlNaSijUg]. 

 [Crystallization — Triclinic] 

 Mica Mines, Amelia, Va. 23 



MiCKOLLNE, var. Amazonstone [AlKSijOx]. 



[Crystallization — Triclinic] 

 This variety is susceptibleof a high polisli, and 

 is used for maki-'g paper weights and oruamvnts. 

 Mica Mines, Amelia, Ta. 24 



Kyanite [Al.SiO,,]. 



[Crystallization — Triclinic ] 



Black Mountain Station, Buncombe County. 



Sr.C. 25 



Barite ok Heavy Spak [BaS04]. 



[Crystallization — Orthorhombic ] 



Tennessee. 



Limonite [Fe(()ll)3] 



[Amorphous.] 



Salisburv, Conn. 



26 



27 



Serpentine [Mg3H,Si20i(,]- 

 [ Aniorijlious.] 

 This serpentine results as an alteration from a 

 variety of pyroxene, RSiOs- 



Near Montville, Morris County, N. J. 28 



Massive Apatite [Ca5(l'04)3F]. 

 [Crystallization- Hexagonal] 

 This material is ground up and treated with 

 sulphuric acid to prei)are it for use as a ferti- 

 lizer. 



Krageroe, Norway. 29 



Rose Quartz | 8102] . 

 [Crystallization— Rhombohedral. | 



Paris, Me. 30 



TuRquoisE [Al4(OH)6(P<)4l2.H20|. 

 [Amorphous.] 

 The matrix of this mineral is afelspathic rock. 

 Tliis locality has afforded many fine gems. 



Los Cerillos, New Mexico. 31 



Dufrenite [Fe2(OH)3P04]. 

 [ Crystallization- Orthorhombic . ] 

 Irish Creek, near Lexington, Va, 32 



