Alphabetical Listing for H

• Haberlandt H, Schroll E (1939) The color and fluorescence of wulfenite in relation to the content of chromium and other trace elements. Experientia (1950), 6, 89-90. (in German)
  
• Hain M, Sun Z (2019) Blue gahnite from Nigeria. Gems & Gemology 55, 434-436.
• Hainschwang T, Notari F, Fritsch E, Massi L (2006) Natural, untreated diamonds showing the A, B and C infrared absorptions (“ABC diamonds”), and the H2 absorption. Diamond and Related Materials 15, 1555-1564.
• Hainschwang T, Respinger A, Notari F, Hartmann HJ, Günthard C (2009) A comparison of diamonds irradiated by high fluence neutrons or electrons, before and after annealing. Diamond & Related Materials 18, 1223–1234.
• Hainschwang T, Notari F, Massi F, Armbruster T, Rondeau B, Fritsch E, Nagashima M (2010) Hibonite: a new gem mineral. Gems & Gemology 46, 135–138.
• Hainschwang T, Fritsch E, Notari F, Rondeau B, Katrusha A (2013) The origin of color in natural C center bearing diamonds. Diamond and Related Materials 39, 27–40.
• Hainschwang T, Notari F, Vadaszi E (2014) The Rhodesian Star: An exceptional asteriated diamond. The Journal of Gemmology 34, 306-315.

• Hålenius U (1978) A spectroscopic investigation of manganian andalusite. Canadian Mineralogist 16, 567-575.
• Hålenius U (1979) State and location of iron in sillimanite. N. Jb. Mineral Mh. 1979:165-174
• Hålenius U, Annersten H, Langer K (1981) Spectral studies on natural chloritoids. Physics and Chemistry of Minerals 7, 117-123.
• Hålenius U (1984) The crystal field spectra of Mn3+ in chlorite. Geologiska Föreningens i Stockholm Förhandlingar 106:51-57 
  
• Hålenius U, Lindqvist B (1996) Chromophoric divalent iron in optically anisotropic magnussonite. European Journal of Mineralogy 8, 25-34.
• Hålenius U, Skogby H (1996) Crystal field spectra of trivalent manganese in synthetic and natural (Na+-Mn3+)-substituted diopside. European Journal of Mineralogy 8:1231-1240
• Hålenius U, Westlund E (1998) Manganese valency and the colour of the Mn2AsO4(OH) polymorphs eveite and sarkinite. Mineral Mag 62:113-119
• Hålenius U (2000) Optical absorption spectra of Cr-bearing vesuvianite: Detection and measurement of Cr3+ at the Y3-site. Periodico di Mineralogia 69:35-38
• Hålenius U (2011) Absorption of light by exchange coupled pairs of tetrahedrally coordinated divalent manganese in the helvite-genthelvite solid solution. Periodico di Mineralogia 80, 105-111.
• Hålenius U (2001) Substitution of Mn3+ in diaspore (γ-AlOOH). Neues Jahrbuch für Mineralogie Monatshefte 2001, 81-96.
• Hålenius U, Skogby H, Andreozzi G (2002) Influence of cation distribution on the optical spectra of Fe3+-bearing spinelss-hercynite crustals: evidence for electron transitions in VIFe2+-VIFe3+-clusters. Phys Chem Minerals 29:319-330
• Hålenius U (2004) Stabilization of trivalent Mn in natural tetragonal hydrogarnets on the join 'hydrogrossular' - henritermierite, Ca3Mn3+2[SiO4]2[H4O4]. Mineralogical Magazine 68:335-341
• Hålenius U, Bosi F, Skogby H (2007) Galaxite, MnAl2O4, a spectroscopic standard for tetrahedrally coordinated Mn2+ in oxygen-based mineral structures. American Mineralogist 92, 1225–1231.
• Hålenius U, Häusserman U, Harryson H (2005) Holtstamite, Ca3(Al,Mn3+)2(SiO4)3-x(H4O4)x, a new tetragonal hydrogarnet from Wessels Mine, South Africa. European Journal of Mineralogy 17:375-382
• Hålenius U, Andreozzi GB, Skogby H (2010) Structural relaxation around Cr3+ and the red-​green color change in the spinel (sensu stricto)​-​magnesiochromite (MgAl2O4- ​MgCr2O4) and gahnite-​zincochromite (ZnAl2O4- ​ZnCr2O4)  solid-solution series. American Mineralogist 95, 456-462. 
  
• Hålenius U (2011) Absorption of light by exchange coupled pairs of tetrahedrally coordinated divalent manganese in the helvite-genthelvite solid solution. Periodico di Mineralogia 80, 105-111.
  

• Hall JA (1941) The relation between colour and chemical composition in the biotites.  American Mineralogist 26, 29-33.
  
• Halliburton LE (1989) ESR and Optical Characterization of Point Defects in Quartz. Applied Radiation Isotopes 40, 859-863.
  
• Han W, Liu Y, Zhang J, Lu T (2020) Color origins of two types of natural lavender jadeite jades. Acta Mineralogica Sinica 40, 549-555. In Chinese.
  
• Han X, Feng X, Kang Y, Guo S, Li Y (2018) Intervalence charge transfer transition of Co2+-Ti4+ ion pair in α-Al2O3:Co,Ti crystal. Journal of Aloys and Compounds 768, 1058-1063.
  
• Handin J, Higgs DV, Lewis DR, Weyl PK (1957) Effects of gamma radiation on the experimental deformation of calcite and certain rocks. Bulletin of the Geological Society of America 68, 1203-1224.
  
• Hänni HA, Gunawardene M (1982) Ferroaxinite - Another new gem from Sri Lanka. J Gemm 18:20-27
• Hänni HA (1983) Weitere Untersuchungen an einigen farbwechselnden Edelsteinen. Z. Dt. Gemmol. Ges 32, 99-106.
  
• Hänni HA (1994) Origin determination for gemstones: possibilities, restrictions and reliability. J Gemm 24:139-148
• Hänni HA (2017) Diaspor mit Farbwechsel und eine Glas-Imitation. Z. Dt. Gemmol. Ges 66, 31-38.
  
• Hanser CS, Gui B, Hӓger T, Botcharnikov R (2022) Emerald from the Chitral Region, Pakistan: A New Deposit. The Journal of Gemmology 38, 234-252
• Hanser CS, Hӓger T, Botcharnikov R, Stephan T, Gul B (2023) Comparison of Emeralds from the Chitral District, Pakistan, with other Pakistani and Afghan Emeralds. Journal of Gemmology 38, 561-599.
• Hanson SL, Falster AU, Simmons WB (2009) Blue wavellite from the De Linde Quarry, Garland County, Arkansas. Contributed Papers in Specimen Mineralogy: Part 2. 36th Rochester Mineralogical Symposium.
  
• Hanus R, Kusa I, Kasikova J (2016) Gem-quality sekaninaite from the Czech Republic. The Journal of Gemmology 35, 148-154.
• Hanus R, Stubna J (2017) Colourless forsterite from Vietnam. Journal of Gemmology 35, 288-289
• Harder, Hermann (1969) Color imparting trace elements in natural corundums. Neues Jahrbuch fuer Mineralogie, Abhandlungen, 110, 128-41.
  
• Harder H (1995) Trace elements as colouring agents in jadeites. Journal of Gemmology 24, 508-511.
  
• Harding RR, Wall F (1987) Blue spinel from the Hunza valley, Pakistan. Journal of Gemmology 29, 403-405.
  
• Hassan F, Cohen AJ (1974) Biaxial color centers in amethyst quartz. Amer Mineral 59:709-718
• Hassan F, El-Rakhaway A (1974) Chromium III centers in synthetic alexandrite. Amer Mineral 59, 159-165.
• Hassan F (1978) Impurity-related enters in a pale green calcite crystal. Amer Mineral 63:732-736
• Hassan F, Labib M (1978) Induced color centre in alpha-spodumene called kunzite. Neues Jahrbuch Für Mineralogie Abhandlungen 134, 104–115.
• Hatipoglu M, Helvaci C, Chamberlain SC, Babalik H (2010) Mineralogical characteristics of unusual "Anatolian" diaspore (zultanite) crystals from the Ilbirdagi diasporite deposit, Turkey. Journal of African Earth Sciences 57, 525-541.
  
• Hawthorne FC (1981) Amphibole spectroscopy. In: DR Veblen, ed., Amphiboles and Other Hydrous Pyriboles - Mineralogy, Rev. Mineral 9A, 103-139.
• Hazen RM, Bell PM, Mao HK (1977) Comparison of absorption spectra of lunar and terrestrial olivines. Carnegie Inst. Washington Yearbook 76:508-512
• Hazen RM, Mao HK, Bell PM (1977) Effects of compositional varation on absorption spectra of lunar olivines. Proc. 8th Lunar Sci. Conf., Pergamon Press, New York, 1081-1090
• Hazen RM, Bell PM, Mao HK (1977) Polarized absorption spectra of the Angra dos Reis fassaite to 52 Kbar. Carnegie Inst. Washington Yearbook 76:515-516
• Hazen RM, Bell PM, Mao HK (1978) Effects of compositional variation on absorption spectra of lunar pyroxenes. Proc. 9th Lunar Planet. Sci. Conf. 2919-2934.
• Hazen RM, Bell PM, Mao HK (1978) Systematic variations of pyroxene absorption spectra with composition. Carnegie Inst. Washington Yearbook 77:853-855
• He W, Wang Y, Mao J (2011)Coloring mechanism of purple jadeiteHuadong Ligong Daxue Xuebao, Ziran Kexueban 37, 182-185. In Chinese
  
• Hebert, L.B. and Rossman, G.R. (2008) Greenish quartz from the Thunder Bay Amethyst Mine Panorama, Thunder Bay, Ontario, Canada, Canadian Mineralogist 46, 61–74
  
• Henn U, Hofmann C (1985) Green sphalerite from Zaire. Journal of Gemmology 19, 416-418
• Henn U, Schramm M (1986) Some observations on brown tourmalines from Elahera, Sri Lanka. Journal of Gemmology 20, 154-.156.
  
• Henn U, Bank H, Bank FH, von Platen H, Hofmeister W (1990) Transparent bright blue Cu-bearing tourmalines from Paraiba, Brazil. Mineralogical Magazine 54, 553-557.
• Henn U, Bank H (1991) Unusually dark red tourmaline of the dravite-schorl series. Neues Jahrbuch für Mineralogie - Monatshefte 1991, 408-412.
• Henn U, Milisenda CC (1999) Synthetic red beryl from Russia. Journal of Gemmology 26, 481-486.
  
• Henn U, Schultz-Guttler R (2009) Colour-Enhanced Quartz and its Identification: green, violet-blue and yellow-green quartz from Brazil. Canadian Gemmologist 30, 46-54
  
• Henn U, Schmitz F (2014) Green and Pink Tourmaline from Rwanda. The Journal of Gemmology 34, 344-349.
  
• Henn U, Schmitz F (2015) Gem Mosandrite from Russia. The Journal of Gemmology 34, 565-566.
• Henn U, Schmitz F, Hyršl J (2015) Gem-quality wurtzite from Tanzania. The Journal of Gemmology 34, 669-671.
  
• Herd CDK, Peterson RC, Rossman GR (2000) Violet-coloured diopside from South Baffin Island, Nanuvut Territory. Canadian Mineralogist 38:1193-1199
• Hiroi T, Takeda H (1992) Crystal-field theory calculations for Fe2+ ions in bronzite, augite, and olivine. Phys Chem Minerals 19:229-235
• Hofer SC (1985) Pink diamonds from Australia. Gems & Gemology 21:147-155
• Hofmeister AM, Rossman GR (1983) Color in feldspars. In: PH Ribbe, ed., Feldspars. Rev Mineral 2, 2d ed., 271-280
• Hofmeister AM, Rossman GR (1984) Determination of Fe2+ and Fe3+ concentrations in feldspar by optical and EPR spectroscopy. Phys Chem Minerals 11:213-224
• Hofmeister AM, Rossman GR (1985a) A spectroscopic study of amazonite: irradiative coloration of structurally hydrous Pb-bearing feldspar. Amer Mineral 70:794-804
• Hofmeister AM, Rossman GR (1985b) Exsolution of metallic copper from Lake county labradorite. Geology 13:644-647
• Hofmeister AM, Rossman GR (1985c) A model for the irradiative coloring of smoky feldspar and the inhibiting influence of water. Phys Chem Minerals 12:324-332
• Hofmeister AM, Rossman GR (1986) A spectroscopic study of blue radiation coloring in plagioclase. Amer Mineral 71:95-98
• Hogarth DD, Brown FF, Pritchard AM (1970) Biabsorption, Mossbauer spectra and chemical investigation of five phlogopite samples from Quebec. Canadian Mineralogist 10, 710-722.
  
• Holden EF (1925) The cause of color in smoky quartz and amethyst. American Mineralogist 10, 203-252.
  
• Hollingsworth GJ, McClure DS (1993) Photoionization and photochemical production of color centers in Ce3+- and Ce3+:Na+-doped CaF2. Physical Review B 48, #48.
  
• Holtstam D (1996) Iron in hibonite: a spectroscopic study. Phys Chem Mineral 23:452-460
• Holtstam D (1997) Hiärneite, a new, Zr-Sb oxide mineral isostructural with calzirtite, from Långban, Sweden. European Journal of Mineralogy 9:843-848
• Hong X, Bai G, Zhao M (1985) The study of the optical and the EPR spectra of vanadium(4+) in zircon-​type crystals. Journal of Physics and Chemistry of Solids 46, 719-20.
  
• Horita H (1980)  Some optical properties of natural pyrite crystals as a semiconductor. Science Reports of the Research Institutes, Tohoku University, Series A:  Physics, Chemistry, and Metallurgy 29, 112-121.
  
• Hoska M, Miyata T, Shimizu Y, Okuyama O (1986) Synthesis of rose-quartz crystal. J Crystal Growth 78:561-562
• Hosaka N, Sekiya T, Satoko C, Kurita S (1997) Optical properties of single-crystal anatase TiO₂. Journal of the physical Society of Japan 66, 877-880.
• Howard CLH, Kerr PF.(1960) Blue halite. Science 132, 1886-1887.
  
• Howell D, Fisher D, Piazolo S, Griffin WL, Sibley SJ (2015) Pink color in Type I diamonds: Is deformation twinning the cause? American Mineralogist 100, 1518–1527
  
• Hradil D, Grygar T, Hrušková M, Bezdicka P, Lang K, Schneeweiss O, Chvátal M (2004) Green Earth Pigment from the Kadan Region, Czech Republic: :Use of Rare Fe-rich Smectite. Clays and Clay Minerals 52, 767–778.
• Hreus S, Novák M, Štubňa J (2022) Iolite from the Czech Republic.The Journal of Gemmology 38, 12-14.
  
• Hu XR, Langer K, Boström D (1990) Polarized electronic absorption spectra and Ni-Mg partitioning in olivines (Mg1-xNix)2[SiO4]. European Journal of Mineralogy 2:29-41.
• Hu Y, Lu R (2019) Unique Vanadium-Rich Emerald From Malipo, China. Gems & Gemology 55, 338–352.
  
• Hu Y, Lu R (2020) Color Characteristics of Blue to Yellow Beryl From Multiple Origins. Gems & Gemology 56, 54-65.
  
• Hu Z, Guo Y (2018) The Ecological Impact of Mining Rose Quartz with Needle-like Inclusions. Ekoloji 27, 1533-1541.
  
• Huang W, Ni P, Shui T, Shi G (2019) Hydrogen-rich green diamond color-trated by multi-step processing. Gems & Gemology 55, 398-405.
• Huang YP, Meng J, Wang LJ, Feng WL (2008) Theoretical investigation of the optical spectra and g factors for Cu2+ in dioptase. Philosophical Magazine, 88, 1701-1704.  
  
• Hunt GR, Salisbury JW (1970) Visible and near infrared spectra of minerals and rocks. I. Silicate minerals. Modern Geol 1:283-300
• Hunt GR, Salisbury JW (1971) Visible and near infrared spectra of minerals and rocks. II. Carbonates. Modern Geol 2:23-30
• Hunt GR, Salisbury JW, Lenhoff CJ (1971a) Visible and near infrared spectra of minerals and rocks. III. Oxides and hydroxides. Modern Geol 2:195-205
• Hunt GR, Salisbury JW, Lenhoff CJ (1971b) Visible and near infrared spectra of minerals and rocks. IV. Sulphides and sulfates. Modern Geol 3:1-14
• Hunt GR, Salisbury JW, Lenhoff CJ (1972) Visible and near infrared spectra of minerals and rocks. V. Halides, phosphates, arseniates, vanadates and borates. Modern Geol 3:121-132
• Huong LTT, Otter LM, Häger T, Ullmann T, Hofmeister W, Weis U, Jochum KP (2016) A New Find of Danburite in the Luc Yen Mining Area, Vietnam. Gems & Gemology 52, 393-401.
  
• Hurlbut CS (1954) Smithsonitefrom Broken Hill Mine, Rhodesia. American Mineralogist 39, 47-50.
  
• Hush NS (1967) Intervalence-transfer absorption. In: F.A. Cotton, ed., Progress in Inorganic Chemistry, Vol. 8, Interscience Publishers, New York. pp. 391-444