Neptunite Na2 KLi(Fe2+,Mn2+)2 Ti2(Si8 O2) (black), with Benitoite BaTi(Si3 O9) (bluish) and Natrolite, Dallas Gem Mine, San Benito River headwaters, San Benito County, California, Ex Renaud Vochten
Neptunite Na2 KLi(Fe2+,Mn2+)2 Ti2(Si8 O2) (black), with Benitoite BaTi(Si3 O9) (bluish), Dallas Gem Mine, San Benito River headwaters, San Benito County, California
Neptunite Na2 KLi(Fe2+,Mn2+)2 Ti2(Si8 O2) (black), with Benitoite BaTi(Si3 O9) (bluish), detail, Dallas Gem Mine, San Benito River headwaters, San Benito County, California
Neptunite Na2 KLi(Fe2+,Mn2+)2 Ti2(Si8 O2) (black), with Natrolite, Dallas Gem Mine, San Benito River headwaters, San Benito County, California
Neptunite Na2 KLi(Fe2+,Mn2+)2 Ti2(Si8 O2) (black), with Natrolite,detail, Dallas Gem Mine, San Benito River headwaters, San Benito County, California
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