It is never crystallized, but may have a fibrous or microcrystalline structure, and commonly occurs in concretionary forms or in compact and earthy masses; sometimes mammillated, botryoidal, reniform or stalactitic. The colour presents various shades of brown and yellow, and the streak is always bro
botryoidal הגייה עם משמעויות, מילים נרדפות, הפכים, תרגומים, משפטים ועוד