1. The prospectors have discovered such minerals as calcite, quartz and asbestos here.

2. The mineral calcite is made up of carbonate sheets and intervening planes of calcium ions.

3. This acts with the dissolved rock to form calcite crystals which build into often spectacular formations.

4. The specimen is preserved in its original calcite; its lack of distortion may be seen from its perfect five-fold symmetry.

5. Stem, calyx, and arms are all made of calcite plates.

6. Details such as fine zonation in calcite cements may be visible in one case but not in another.

7. Dolomite is stained purple, calcite is unstained in the alkaline solution.

8. For example, distinction between calcite and dolomite is difficult because they have similar optical properties.

9. Layers and layers of calcite have created unique formations given magical names like cave pearls, popcorn and soda straws.

10. Ferroan calcite Varying through mauve, purple to royal blue with increasing Fe content.

11. The individual calcite plates of which the fossil is composed can be clearly seen.

12. Prismatic crystal of Barite on Calcite crystals.

13. Calcium carbonate occurs in the allomorphs calcite and aragonite.

14. They are mainly composed of diopside, calcite and quartz.

15. The Calcite Mineral Kingdom addresses you today.

16. Calcite, siderite, barite and others don't contain gold.

17. The unusual exothermal transformation of nacre aragonite to calcite is perhaps resulted from the stored excess enthalpy in nanometer-size aragonite of nacre.

18. They are mainly composed of diopside, calcite and quartz. Geological and mineralogical studies on the deposite indicate that they formed through reginal metamorphism.

19. And some calcite - secreting organisms also add magnesium to the mix.

20. The formation of secondary quartz, albitite, calcite and laumontite affected the storage physical properties of sandstone in different degrees.

21. This method produces the following colour differentiation in carbonate minerals: Calcite Varying through very pale pink to red.

22. Thus differences in 18 O/ 16 O ratio may be expected between water and calcite precipitating from it.

23. Limestone is defined as a rock which contains at least 50 percent, which nearly always occurs as the mineral calcite.

24. Kids warmed up to worms[sentencedict .com], connected with electricity and watched calcite crystals bubble in a cupful of vinegar.

25. The ventral arm plates are nearly pentagonal with a distinct convex distal edge textured with layers of calcite forming a concentric pattern.

26. If the straw becomes blocked, the water flows down the outside, building up the calcite and forming tapering stalactites.

27. The potassium ferricyanide component is very sensitive, and will detect iron in calcite with 1% ferrous carbonate in solid solution.

28. Principle and design of a ring sight consisting of calcite crystal plate and polarized elements are proposed.

29. At night (bottom), the brittle star uncovers the lenses, made of calcite crystals.

30. Carbonate cement is universally more than 10% in sandstones of the upper Yungang formation in Yungang Grottoes area. It's mainly composed of ferriferous calcite and ferriferous dolomite.

1. The prospectors have discovered such minerals as calcite, quartz and asbestos here.

31. The dynamic behaviours of homogenous materials, such as quartz, calcite and wolframite in grinding mills are examined.

32. There are not only illite, but also asphalt, microcrystalline quartz, dolomite, calcite, anorthite, gypsum, and such as potential damage materials.

33. The constructive diagenesis are mainly epigenic karstification and burial dissolution. The destructive diagenesis are filler in each periods, the most devastating cement to porous is sparry calcite.

34. Associated Minerals are halite , calcite , sulfur , pyrite , borax and many others.

35. X-ray studies show that carbonate minerals are aragonite, high-Mg calcite, and lesser dolomite, ankerite and siderite.

36. The vacuum itself is polarized, becoming strongly birefringent, like a calcite crystal.

37. The major nonmetallic minerals are quartz, chansthealite, and miner ores are calcite, ankerite. illite hydromica and other clay minerals.

38. The ore - hunting indicator is of calcite - potassium feldspar veins containing pyritohedron pyrite.

39. Rock-forming mineral, olivine, pyroxene, hornblende, orthoclase, feldspar, plagioclase, mica, quartz, biotite, calcite and other common metal and nonmetal minerals.

40. The remnant intergranular pores were filled with this kind of late calcite cement, which leads to a great decrease of the effective porosity.

41. Calcite is the dominant gangue mineral in the Furong tin polymetallic deposit.

42. By making use of the rotating disc apparatus and macromolecular biocatalyst, the authors have studied the kinetics of calcite dissolution in CO2-H2O solutions with turbulent motion.

43. The main type of carbonate cement was calcite cementing, with little ferrocalcite cement and rare ferrodolomite cement.

44. The chemical composition of the melo shell is calcite and aragonite.

45. To his astonishment, he saw one of the double images disappear as he rotated the calcite.

46. The study on massive hydrogrossular by means of polar microscope, infrared spectra and Xray shows that it consists mainly of hydrogrossular, with a little amount of diopside and calcite.

47. On the basis of crystal structure and crystal chemistry theory, according to the crystal cell parameters, the atomic arrangement of calcite, etc.

48. The result indicates that when the diopside's content increases, the content of the quartz, sericite and calcite decreases, and the boudin 's viscosity increases.

49. The acicular and columnar shapes of aragonite crystals are preserved even after aragonite changes into calcite.

50. Analcime is distributed in sparry calcite cement, while natrolite is in quartz and feldspar clastic particles.

51. So, the extension fractures were often distributed together with shear fractures, and the tension fractures were developed partly with lens veins filled by asphaltum or calcite.

52. The seeming disorder of calcite highlights the geometric precision of fluorite.

53. Dolomite can exsolved not only from magnesian calcite under metamorphic conditions, but also from magnesian calcite sediments under a modest pressure in a normal oceanic environments.

54. Diagenetically authigenic minerals are dominantly kaolinite, chlorite, siliceous,[http:///calcite.html] and ferruginous calcite.

55. The results show that an allowable supersaturation without the precipitation of calcite scaling existed.

56. We can be conviniently studied with reference to a crystal of calcite or Iceland spar.

57. Calcite cementation seens a possibility where lime grains or calcareous organisms are abundant.

58. Most dolomite is obviously the result of replacement of precursor calcite but certainly not all.

59. Vein minerals are mainly in quartz, Calcite, diopside and garnet etc.

60. The result of gravity separation for quartz - calcite type scheelite is not ideal.

61. Many carbonate masses older than Middle Palaeozoic are of dolomite rather than calcite.

62. This thesis first finds that there are some needle-shaped calcite crystals in some soils of studyarea.

63. If you use a pocketknife to cut or scratch these two minerals, you will find that the pocketknife can scratch calcite and can not scratch quartz.

64. After the separation of quartz and calcite by flotation using anionic sodium oleate, cationic ether amine collector was used to float the chlorite, which exhibited a good selectivity.

65. Sulfide ore bodies are mainly composed of galena, sphalerite, calcite and minor amounts of pyrite and marcasite, with no quartz.

66. It is indicated that placer gold and antimonial (auriferous) quartz-calcite vein, calcite vein are the same origin, which are major of the metallic matter resources.

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67. The main mineral in this material is calcite. It is Greenish-brown in colour and is a porous material with a wide variety of shades ranging from dark to light brown.

68. Analcime is distributed in sparry calcite and early calcite cement is wrapped in natrolite cement, which shows that the formation of zeolite is later than that of sparry calcite.

69. Aragonite and magnesium calcite are more soluble than normal calcite.

70. The gangue mineral mainly consists of quartz and sericite, and then calcite, dolomite, chlorite and peat.

71. The main facies of Suining formation are ferruginous-shale film, anhydrite , dolomite and calcite.

72. Thes study and bring forward a new formula for acid bleaching of barite powders containing impurities such as fluorite and calcite.

73. The effect of TATMP on the growth rate of calcite crystals in supersaturated solutions is studied with seeded growth technique.

74. Widely distributed calcite and aragonite crystal in the cave passage are originated from ancient pool deposits.

75. The early-stage calcite fill has strong cathodoluminescence, while the late-stage one has no luminescence.

76. The DTA result shows that the decompositional of calcite and clinker-forming temperature of cement rawmaterialscontained are lower than those of non- fluorogypsum.

77. The main diagenetic minerals of the sandstone include calcite, chlorite, Quarta and kaolinite.

78. The composition analysis of five-component mixed minerals of siderite, kaolinite, dolomite, calcite and quartz has been analyzed inN_2.

79. The mineral composition is simple, only with original metallic minerals antimonite and pyrite, gangue minerals quartz, calcite and a few barites, all in the fissure or hole of the rock.

80. Rochon prism is an important beam splitting polarizer of calcite.

81. The antimony ores are mainly composed of such minerals as stibnite, quartz, opal and calcite.

82. The calcite crystals precipitated from pure supersaturated calcium carbonate exhibit mainly two habits:flat like rhombic crystal and rhombohedral crystal similar to a cube.

83. Ore minerals of Luchang-Datongchang Ag-Cu ores include chalcocite , digenite, bornite, stromeyerite and eucairite which are associated with calcite as a cement.

84. At first glance, calcite might be confused with quartz where both are clear, colorless, and " glassy ".

85. Grainstones are the main part of the section, among which the oolites, intraclast limestones and most bioclast limestones are cemented by sparry calcite.

86. It is indicated that the shell is composed of calcite with Rhombohedral structure as well as aragonite with Orthorhombic structure.

87. Fe-carbonates include early ankerite-dolomite, ankerite and later siderite with calcite and quartz.

88. The ore mineral assemblage of Dayishan wollastonite deposit is complex being composed of wollastonite, diopside, idocrase, K—feldspar, albite, calcite and quartz.