The Minerals of Marin

 
The following listing conforms to that reported in "Pelletier, Willis J., 1962, Mineral Species and Localities of Marin County, Published by the Marin Mineral Society, P.O. Box 345, San Rafael, CA 94901.

The *starred* minerals are reported from the Ring Mountain area. Links are to the Amethyst Galleries' Mineral Gallery 

Alphabetical Listing

*ACTINOLITE*, Calcium Magnesium Iron Silicate Hydroxide ADULARIA

*ALBITE*, Sodium Aluminum Silicate

ALMANDINE, Iron Aluminum Silicate ANKERITE, Calcium Iron Carbonate *ANTIGORITE*

*APATITE*, Calcium (Fluoro-","Chloro-","Hydroxyl-) Phosphate

APOPHYLLITE, Hydrated Potassium Calcium Silicate Hydroxide Flouride ARAGONITE, Calcium Carbonate ARSENOPYRITE, Iron Arsenide Sulfide ASPHALTITE

*AXINITE*, Calcium Iron Magnesium Manganese Aluminum Boro-Silicate Hydroxide

AZURITE, Hydrated Copper Carbonate BARITE, Barium Sulfate BIOTITE, Potassium Iron Magnesium Aluminum Silicate Hydroxide Fluoride *CALCITE*, Calcium Carbonate CARBON var. Coal

CHALCEDONY var AGATE
CHALCEDONY var KINRADITE (orbicular jasper)
CHALCEDONY var JASPER*
CHALCEDONY var PRASE
CHALCEDONY var SARD
CHALCEDONY var CARNELIAN

*CHALCOPYRITE*, Copper Iron Sulfide

Chalopyrite
CHLORITE vars. *CLINOCHLORE* & PENNINITE, Iron Magnesium Aluminum Silicate Hydroxide
Chlorite
CHROMITE

CINNABAR, Mercury Sulfide

Cinnabar
*CLINOZOISITE*

COLLOPHANE

CROCIDOLITE

CUPRITE, Copper Oxide

Cuprite
DATOLITE, Calcium Boro-Silicate Hydroxide
Datolite
*DIOPSIDE*, Calcium Magnesium Silicate *DOLOMITE*, Calcium Magnesium Carbonate *EPIDOTE*, Calcium Iron Aluminum Silicate Hydroxide EPSOMITE, Hydrated Magnesium Sulfate
Epsomite
ERYTHRITE, Hydrated Cobalt Arsenate
Erythrite
GALENA, Lead Sulfide
Galena
GARNET vars. *ALMANDINE* & SPESSARTITE GLAUCONITE

*GLAUCOPHANE*

GOLD, Au

Gold
PRAPHITE

GYPSUM

Gypsum/Selenite
HEMATITE, Iron Oxide
Hematite
HEULANDITE, Hydrated Sodium Calcium Aluminum Silicate
Heulandite
*HORNBLENDE*, Calcium Sodium Magnesium Iron Aluminum Silicate Hydroxide HYDROMAGNESITE

JAROSITE

KAOLINITE, Aluminum Silicate Hydroxide

Kaolinite
*LAWSONITE*

LAUMONTITE, Hydrated Calcium Aluminum Silicate

Laumontite
*LIMONITE*, Hydrated Iron Oxide Hydroxide
Limonite
MALACHITE, Hydrated Copper Carbonate
Malachite
MANGANITE, Manganese Oxide Hydroxide
Manganite
*MANGANOCALCITE*

*MAGNETITE*, Iron Oxide

*MAGNESITE*, Magnesium Carbonate
Magnesite
MERCURY

MICROCLINE, Potassium Aluminum Silicate

Microcline
MILLERITE, Nickel Sulfide
Millerite
*MUSCOVITE*, Potassium Aluminum Silicate Hydroxide Fluoride *NEPHRITE*

OLIVINE, Magnesium Iron Silicate

*OPAL* vars. COMMON & HYALITE, Hydrated Silica
Opal
ORTHOCLASE, Potassium Aluminum Silicate *PENNINITE*

PREHNITE, Calcium Aluminum Silicate Hydroxide

Prehnite
PSILOMELANE

*PUMPELLYITE*

*PYRITE*, Iron Sulfide

Pyrite
PYROLUSITE, Manganese Oxide
Pyrolusite
*PYROPHYLLITE*

PYROXENE var. DIALLAGE

PYROXENE, also see var. DIOPSIDE

PYRRHOTITE, Iron Sulfide

Pyrrhotite
*QUARTZ*, vars. PHANTOM, ROCK CRYSTAL,CITRINE, SMOKY, THETIS HAIRSTONE, Silicon Oxide *RIEBECKITE*

*RUTILE*, Titanium Oxide

Rutile
SCHEELITE, Calcium Tungstate

SERPENTINE vars *CHRYSOTILE*, ANTIGORITE & BASTITE, Iron Magnesium Nickel Silicate Hydroxide

SIDERITE, Iron Carbonate
Siderite


SILVER

SMARAGDITE (Amphibole)

*SPHENE*, Calcium Titanium Silicate

Sphene
*STILPNOMELANE*

SZAIBELYITE

*TALC*, Magnesium Silicate Hydroxide

Talc
TOURMALINE
Tourmaline Group
*TREMOLITE*, Calcium Magnesium Iron Silicate Hydroxide
Tremolite
*VOELKERITE*

WOLLASTONITE

*ZIRCON*, Zirconium Silicate

Zircon
ZOISITE, Calcium Aluminum Silicate Hydroxide
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