Calcareous sponge spicules: a study of magnesian calcites.
D000535:Aluminum / Q000032:analysis; D000818:Animals; D001464:Barium / Q000032:analysis; D002119:Calcium Carbonate / Q000032:analysis*; D007259:Infrared Rays; D008094:Lithium / Q000032:analysis; D008274:Magnesium / Q000032:analysis; D008345:Manganese / Q000032:analysis; D011161:Porifera / Q000145:classification; D012825:Silicon / Q000032:analysis; D012964:Sodium / Q000032:analysis; D013046:Specific Gravity; D013053:Spectrophotometry; D013324:Strontium / Q000032:analysis; D013431:Sulfates / Q000032:analysis; D014961:X-Ray Diffraction
D013431:Sulfates; D001464:Barium; D008345:Manganese; D008094:Lithium; D012964:Sodium; D000535:Aluminum; D002119:Calcium Carbonate; D008274:Magnesium; D013324:Strontium; D012825:Silicon